{"asset": "fastener-standard-interchangeability-exceptions", "asset_type": "equivalence", "body": "Equivalence between withdrawn DIN fastener standards and their current ISO and BS counterparts, and -- the part that is missing everywhere else -- the specific sizes at which the supposedly equivalent parts have different dimensions. Each record is one DIN standard with its ISO and BS counterpart and the publisher's interchangeability verdict, or one size at which a named dimension differs between the two standards. Answers 'is DIN 933 the same as ISO 4017', 'DIN 912 vs ISO 4762 are they interchangeable', 'my drawing says DIN 931 and my distributor only stocks ISO 4014', 'what replaced DIN 934', and 'DIN 125 ISO equivalent washer'. The headline mapping is easy and everyone publishes it; the exception detail is where free sources fail and contradict each other. Wurth, the German distributor that wrote the original catalogues, prints four sizes at which the width across flats changed between DIN 933 and ISO 4017 -- M10 17 mm becomes 16 mm, M12 19 becomes 18, M14 22 becomes 21, M22 32 becomes 34 -- meaning a different spanner. Monster Bolts lists the same pair as fully interchangeable. Both verdicts are published here, attributed, side by side, because the disagreement is the fact.\n", "description": "Equivalence between withdrawn DIN fastener standards and their current ISO and BS counterparts, and -- the part that is missing everywhere else -- the specific sizes at which the supposedly equivalent parts have different dimensions. Each record is one DIN standard with its ISO and BS counterpart and the publisher's interchangeability verdict, or one size at which a named dimension differs between the two standards. Answers 'is DIN 933 the same as ISO 4017', 'DIN 912 vs ISO 4762 are they interchangeable', 'my drawing says DIN 931 and my distributor only stocks ISO 4014', 'what replaced DIN 934', and 'DIN 125 ISO equivalent washer'. The headline mapping is easy and everyone publishes it; the exception detail is where free sources fail and contradict each other. Wurth, the German distributor that wrote the original catalogues, prints four sizes at which the width across flats changed between DIN 933 and ISO 4017 -- M10 17 mm becomes 16 mm, M12 19 becomes 18, M14 22 becomes 21, M22 32 becomes 34 -- meaning a different spanner. Monster Bolts lists the same pair as fully interchangeable. Both verdicts are published here, attributed, side by side, because the disagreement is the fact.", "file": "index.md", "generated": true, "harvested": "2026-08-05", "key_field": "din_standard", "licence": "Facts extracted from freely published distributor technical pages. Dimensions are facts, not copyrightable expression (US: Feist, 1991). ISO 4017 and the other ISO fastener documents were not purchased or opened; ISO's own terms restrict use of ISO content, and no ISO content is used here -- only dimensions as facts, quoted from distributors who published them. Three separate distributors, no bulk take from any one: the exception rows come from Wurth, the pair list from Monster Bolts, the BS column from TR Fastenings.", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards", "https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners", "https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php"], "stale_after": "2029-08-04", "title": "DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "dataset", "verified": false}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1\n\n**ISO standard:** ISO 2339\n\n**Part:** Cone Pins, untempered\n\n> DIN 1 | ISO 2339 | | Cone Pins, untempered |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1", "file": "din-1.md", "generated": true, "harvested": "2026-08-05", "id": "din-1", "iso_standard": "ISO 2339", "part_description": "Cone Pins, untempered", "source_quote": "DIN 1 | ISO 2339 | | Cone Pins, untempered |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 125\n\n**ISO standard:** ISO 7089\n\n**Part:** Washers; medium type, primarily for hexagon bolts\n\n> DIN 125 | ISO 7089 | | Washers; medium type, primarily for hexagon bolts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 125", "file": "din-125-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-125-2", "iso_standard": "ISO 7089", "part_description": "Washers; medium type, primarily for hexagon bolts", "source_quote": "DIN 125 | ISO 7089 | | Washers; medium type, primarily for hexagon bolts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 125 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 125\n\n**ISO standard:** ISO 7089, 7090\n\n**Part:** Washer, Plain\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Washer, Plain | DIN 125 | ISO 7089, 7090 | Fully interchangeable | Normal vs chamfered faces.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 125", "file": "din-125.md", "generated": true, "harvested": "2026-08-05", "id": "din-125", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 7089, 7090", "part_description": "Washer, Plain", "source_quote": "Washer, Plain | DIN 125 | ISO 7089, 7090 | Fully interchangeable | Normal vs chamfered faces.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 125 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 126\n\n**ISO standard:** ISO 7091\n\n**Part:** Product grade C washers - designed for use with Hexagon Head Bolts and Nut\n\n> DIN 126 | ISO 7091 | | Product grade C washers - designed for use with Hexagon Head Bolts and Nut |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 126", "file": "din-126.md", "generated": true, "harvested": "2026-08-05", "id": "din-126", "iso_standard": "ISO 7091", "part_description": "Product grade C washers - designed for use with Hexagon Head Bolts and Nut", "source_quote": "DIN 126 | ISO 7091 | | Product grade C washers - designed for use with Hexagon Head Bolts and Nut |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 126 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 127\n\n**BS standard:** BS4464B\n\n**Part:** Spring Lock Washers with square ends or tang ends\n\n> DIN 127 | | BS4464B | Spring Lock Washers with square ends or tang ends |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS4464B", "din_standard": "DIN 127", "file": "din-127.md", "generated": true, "harvested": "2026-08-05", "id": "din-127", "part_description": "Spring Lock Washers with square ends or tang ends", "source_quote": "DIN 127 | | BS4464B | Spring Lock Washers with square ends or tang ends |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 127 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 128\n\n**Part:** Curved and wave Spring Lock Washers\n\n> DIN 128 | | | Curved and wave Spring Lock Washers |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 128", "file": "din-128.md", "generated": true, "harvested": "2026-08-05", "id": "din-128", "part_description": "Curved and wave Spring Lock Washers", "source_quote": "DIN 128 | | | Curved and wave Spring Lock Washers |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 128 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 137\n\n**Part:** Spring Washers, curved or wave\n\n> DIN 137 | | | Spring Washers, curved or wave |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 137", "file": "din-137.md", "generated": true, "harvested": "2026-08-05", "id": "din-137", "part_description": "Spring Washers, curved or wave", "source_quote": "DIN 137 | | | Spring Washers, curved or wave |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 137 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1440\n\n**ISO standard:** ISO 8738\n\n**Part:** Medium type washers for pins\n\n> DIN 1440 | ISO 8738 | | Medium type washers for pins |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1440", "file": "din-1440.md", "generated": true, "harvested": "2026-08-05", "id": "din-1440", "iso_standard": "ISO 8738", "part_description": "Medium type washers for pins", "source_quote": "DIN 1440 | ISO 8738 | | Medium type washers for pins |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1440 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1443\n\n**ISO standard:** ISO 2340\n\n**Part:** Clevis Pins without head\n\n> DIN 1443 | ISO 2340 | | Clevis Pins without head |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1443", "file": "din-1443.md", "generated": true, "harvested": "2026-08-05", "id": "din-1443", "iso_standard": "ISO 2340", "part_description": "Clevis Pins without head", "source_quote": "DIN 1443 | ISO 2340 | | Clevis Pins without head |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1443 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1444\n\n**ISO standard:** ISO 2341\n\n**Part:** Clevis Pins with head\n\n> DIN 1444 | ISO 2341 | | Clevis Pins with head |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1444", "file": "din-1444.md", "generated": true, "harvested": "2026-08-05", "id": "din-1444", "iso_standard": "ISO 2341", "part_description": "Clevis Pins with head", "source_quote": "DIN 1444 | ISO 2341 | | Clevis Pins with head |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1444 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1470\n\n**ISO standard:** ISO 8739\n\n**Part:** Grooved Pins, full length parallel-grooved with pilot\n\n> DIN 1470 | ISO 8739 | | Grooved Pins, full length parallel-grooved with pilot |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1470", "file": "din-1470.md", "generated": true, "harvested": "2026-08-05", "id": "din-1470", "iso_standard": "ISO 8739", "part_description": "Grooved Pins, full length parallel-grooved with pilot", "source_quote": "DIN 1470 | ISO 8739 | | Grooved Pins, full length parallel-grooved with pilot |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1470 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1471\n\n**ISO standard:** ISO 8744\n\n**Part:** Grooved Pins, full length taper-grooved\n\n> DIN 1471 | ISO 8744 | | Grooved Pins, full length taper-grooved |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1471", "file": "din-1471.md", "generated": true, "harvested": "2026-08-05", "id": "din-1471", "iso_standard": "ISO 8744", "part_description": "Grooved Pins, full length taper-grooved", "source_quote": "DIN 1471 | ISO 8744 | | Grooved Pins, full length taper-grooved |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1471 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1472\n\n**ISO standard:** ISO 8745\n\n**Part:** Grooved Pins, half length taper-grooved\n\n> DIN 1472 | ISO 8745 | | Grooved Pins, half length taper-grooved |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1472", "file": "din-1472.md", "generated": true, "harvested": "2026-08-05", "id": "din-1472", "iso_standard": "ISO 8745", "part_description": "Grooved Pins, half length taper-grooved", "source_quote": "DIN 1472 | ISO 8745 | | Grooved Pins, half length taper-grooved |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1472 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1473\n\n**ISO standard:** ISO 8740\n\n**Part:** Grooved Pins, full length parallel-grooved with chamfer\n\n> DIN 1473 | ISO 8740 | | Grooved Pins, full length parallel-grooved with chamfer |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1473", "file": "din-1473.md", "generated": true, "harvested": "2026-08-05", "id": "din-1473", "iso_standard": "ISO 8740", "part_description": "Grooved Pins, full length parallel-grooved with chamfer", "source_quote": "DIN 1473 | ISO 8740 | | Grooved Pins, full length parallel-grooved with chamfer |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1473 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1474\n\n**ISO standard:** ISO 8741\n\n**Part:** Grooved Pins, half length reverse-grooved\n\n> DIN 1474 | ISO 8741 | | Grooved Pins, half length reverse-grooved |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1474", "file": "din-1474.md", "generated": true, "harvested": "2026-08-05", "id": "din-1474", "iso_standard": "ISO 8741", "part_description": "Grooved Pins, half length reverse-grooved", "source_quote": "DIN 1474 | ISO 8741 | | Grooved Pins, half length reverse-grooved |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1474 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1475\n\n**ISO standard:** ISO 8742\n\n**Part:** Grooved Pins, third length centre-grooved\n\n> DIN 1475 | ISO 8742 | | Grooved Pins, third length centre-grooved |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1475", "file": "din-1475.md", "generated": true, "harvested": "2026-08-05", "id": "din-1475", "iso_standard": "ISO 8742", "part_description": "Grooved Pins, third length centre-grooved", "source_quote": "DIN 1475 | ISO 8742 | | Grooved Pins, third length centre-grooved |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1475 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1476\n\n**ISO standard:** ISO 8746\n\n**Part:** Round Head Grooved Pins\n\n> DIN 1476 | ISO 8746 | | Round Head Grooved Pins |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1476", "file": "din-1476.md", "generated": true, "harvested": "2026-08-05", "id": "din-1476", "iso_standard": "ISO 8746", "part_description": "Round Head Grooved Pins", "source_quote": "DIN 1476 | ISO 8746 | | Round Head Grooved Pins |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1476 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1477\n\n**ISO standard:** ISO 8747\n\n**Part:** Countersunk Head Grooved Pins\n\n> DIN 1477 | ISO 8747 | | Countersunk Head Grooved Pins |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1477", "file": "din-1477.md", "generated": true, "harvested": "2026-08-05", "id": "din-1477", "iso_standard": "ISO 8747", "part_description": "Countersunk Head Grooved Pins", "source_quote": "DIN 1477 | ISO 8747 | | Countersunk Head Grooved Pins |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1477 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1481\n\n**ISO standard:** ISO 8752\n\n**Part:** Spring-type Straight Pins (roll pins) - heavy type\n\n> DIN 1481 | ISO 8752 | | Spring-type Straight Pins (roll pins) - heavy type |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1481", "file": "din-1481.md", "generated": true, "harvested": "2026-08-05", "id": "din-1481", "iso_standard": "ISO 8752", "part_description": "Spring-type Straight Pins (roll pins) - heavy type", "source_quote": "DIN 1481 | ISO 8752 | | Spring-type Straight Pins (roll pins) - heavy type |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1481 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1587\n\n**Part:** Hexagon Domed Cap Nuts\n\n> DIN 1587 | | | Hexagon Domed Cap Nuts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1587", "file": "din-1587.md", "generated": true, "harvested": "2026-08-05", "id": "din-1587", "part_description": "Hexagon Domed Cap Nuts", "source_quote": "DIN 1587 | | | Hexagon Domed Cap Nuts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1587 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 1816\n\n**Part:** Round Nut with set pin holes inside; ISO metric fine thread\n\n> DIN 1816 | | | Round Nut with set pin holes inside; ISO metric fine thread |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 1816", "file": "din-1816.md", "generated": true, "harvested": "2026-08-05", "id": "din-1816", "part_description": "Round Nut with set pin holes inside; ISO metric fine thread", "source_quote": "DIN 1816 | | | Round Nut with set pin holes inside; ISO metric fine thread |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 1816 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 315\n\n**Part:** Wing Nuts with rounded wings\n\n> DIN 315 | | | Wing Nuts with rounded wings |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 315", "file": "din-315.md", "generated": true, "harvested": "2026-08-05", "id": "din-315", "part_description": "Wing Nuts with rounded wings", "source_quote": "DIN 315 | | | Wing Nuts with rounded wings |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 315 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 316\n\n**Part:** Wing Screws with rounded wings\n\n> DIN 316 | | | Wing Screws with rounded wings |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 316", "file": "din-316.md", "generated": true, "harvested": "2026-08-05", "id": "din-316", "part_description": "Wing Screws with rounded wings", "source_quote": "DIN 316 | | | Wing Screws with rounded wings |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 316 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 404\n\n**Part:** Slotted Capstan Screws\n\n> DIN 404 | | | Slotted Capstan Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 404", "file": "din-404.md", "generated": true, "harvested": "2026-08-05", "id": "din-404", "part_description": "Slotted Capstan Screws", "source_quote": "DIN 404 | | | Slotted Capstan Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 404 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 417\n\n**ISO standard:** ISO 7435\n\n**Part:** Slotted Set Screws with long dog point\n\n> DIN 417 | ISO 7435 | | Slotted Set Screws with long dog point |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 417", "file": "din-417-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-417-2", "iso_standard": "ISO 7435", "part_description": "Slotted Set Screws with long dog point", "source_quote": "DIN 417 | ISO 7435 | | Slotted Set Screws with long dog point |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 417 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 417\n\n**ISO standard:** DIN EN 27435\n\n**Part:** Slotted Set Screw \u2013 Long Dog\n\n**Interchangeability verdict:** Check spec\n\n> Slotted Set Screw \u2013 Long Dog | DIN 417 | DIN EN 27435 | Check spec | Legacy to EN conversion.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 417", "file": "din-417.md", "generated": true, "harvested": "2026-08-05", "id": "din-417", "interchangeability": "Check spec", "iso_standard": "DIN EN 27435", "part_description": "Slotted Set Screw \u2013 Long Dog", "source_quote": "Slotted Set Screw \u2013 Long Dog | DIN 417 | DIN EN 27435 | Check spec | Legacy to EN conversion.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 417 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 427\n\n**ISO standard:** ISO 2342\n\n**Part:** Slotted Headless Screws with chamfered end\n\n> DIN 427 | ISO 2342 | | Slotted Headless Screws with chamfered end |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 427", "file": "din-427-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-427-2", "iso_standard": "ISO 2342", "part_description": "Slotted Headless Screws with chamfered end", "source_quote": "DIN 427 | ISO 2342 | | Slotted Headless Screws with chamfered end |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 427 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 427\n\n**ISO standard:** ISO 2342\n\n**Part:** Slotted Headless Screw with Shank\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Slotted Headless Screw with Shank | DIN 427 | ISO 2342 | Fully interchangeable | Slotted variant.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 427", "file": "din-427.md", "generated": true, "harvested": "2026-08-05", "id": "din-427", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 2342", "part_description": "Slotted Headless Screw with Shank", "source_quote": "Slotted Headless Screw with Shank | DIN 427 | ISO 2342 | Fully interchangeable | Slotted variant.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 427 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 428\n\n**ISO standard:** ISO 4034\n\n**Part:** Hexagon Nuts, Grade C\n\n> DIN 428 | ISO 4034 | | Hexagon Nuts, Grade C |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 428", "file": "din-428.md", "generated": true, "harvested": "2026-08-05", "id": "din-428", "iso_standard": "ISO 4034", "part_description": "Hexagon Nuts, Grade C", "source_quote": "DIN 428 | ISO 4034 | | Hexagon Nuts, Grade C |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 428 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 433-1\n\n**ISO standard:** ISO 7092\n\n**Part:** Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws\n\n> DIN 433-1 | ISO 7092 | | Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 433-1", "file": "din-433-1.md", "generated": true, "harvested": "2026-08-05", "id": "din-433-1", "iso_standard": "ISO 7092", "part_description": "Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws", "source_quote": "DIN 433-1 | ISO 7092 | | Product grade A washers - with a hardness up to 250 HV designed for use with cheese head screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 433-1 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 433-2\n\n**ISO standard:** ISO 7092\n\n**Part:** Product grade A washers - with a hardness up to 300 HV designed for use with cheese head screws\n\n> DIN 433-2 | ISO 7092 | | Product grade A washers - with a hardness up to 300 HV designed for use with cheese head screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 433-2", "file": "din-433-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-433-2", "iso_standard": "ISO 7092", "part_description": "Product grade A washers - with a hardness up to 300 HV designed for use with cheese head screws", "source_quote": "DIN 433-2 | ISO 7092 | | Product grade A washers - with a hardness up to 300 HV designed for use with cheese head screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 433-2 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 433\n\n**ISO standard:** ISO 7092\n\n**Part:** Washer, Plain Small\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Washer, Plain Small | DIN 433 | ISO 7092 | Fully interchangeable | Small series.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 433", "file": "din-433.md", "generated": true, "harvested": "2026-08-05", "id": "din-433", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 7092", "part_description": "Washer, Plain Small", "source_quote": "Washer, Plain Small | DIN 433 | ISO 7092 | Fully interchangeable | Small series.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 433 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 438\n\n**ISO standard:** ISO 7436\n\n**Part:** Slotted Set Screws with cup point\n\n> DIN 438 | ISO 7436 | | Slotted Set Screws with cup point |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 438", "file": "din-438-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-438-2", "iso_standard": "ISO 7436", "part_description": "Slotted Set Screws with cup point", "source_quote": "DIN 438 | ISO 7436 | | Slotted Set Screws with cup point |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 438 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 438\n\n**ISO standard:** DIN EN 27436\n\n**Part:** Slotted Set Screw \u2013 Cup\n\n**Interchangeability verdict:** Check spec\n\n> Slotted Set Screw \u2013 Cup | DIN 438 | DIN EN 27436 | Check spec | Legacy to EN conversion.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 438", "file": "din-438.md", "generated": true, "harvested": "2026-08-05", "id": "din-438", "interchangeability": "Check spec", "iso_standard": "DIN EN 27436", "part_description": "Slotted Set Screw \u2013 Cup", "source_quote": "Slotted Set Screw \u2013 Cup | DIN 438 | DIN EN 27436 | Check spec | Legacy to EN conversion.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 438 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 439-1\n\n**ISO standard:** ISO 4036\n\n**Part:** Unchamfered Hexagon Thin Nuts - product grade B\n\n> DIN 439-1 | ISO 4036 | | Unchamfered Hexagon Thin Nuts - product grade B |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 439-1", "file": "din-439-1.md", "generated": true, "harvested": "2026-08-05", "id": "din-439-1", "iso_standard": "ISO 4036", "part_description": "Unchamfered Hexagon Thin Nuts - product grade B", "source_quote": "DIN 439-1 | ISO 4036 | | Unchamfered Hexagon Thin Nuts - product grade B |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 439-1 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 439-2\n\n**ISO standard:** ISO 4035\n\n**Part:** Chamfered Hexagon Thin Nuts - product grades A and B\n\n> DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 439-2", "file": "din-439-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-439-2", "iso_standard": "ISO 4035", "part_description": "Chamfered Hexagon Thin Nuts - product grades A and B", "source_quote": "DIN 439-2 | ISO 4035 | | Chamfered Hexagon Thin Nuts - product grades A and B |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 439-2 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 439\n\n**ISO standard:** ISO 4035, 4036\n\n**Part:** Hex Nut \u2013 Thin\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Hex Nut \u2013 Thin | DIN 439 | ISO 4035, 4036 | Fully interchangeable | Chamfered/unchamfered covered by ISO pair.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 439", "file": "din-439.md", "generated": true, "harvested": "2026-08-05", "id": "din-439", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 4035, 4036", "part_description": "Hex Nut \u2013 Thin", "source_quote": "Hex Nut \u2013 Thin | DIN 439 | ISO 4035, 4036 | Fully interchangeable | Chamfered/unchamfered covered by ISO pair.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 439 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 440\n\n**ISO standard:** ISO 7094\n\n**Part:** Washers for use in timber constructions\n\n> DIN 440 | ISO 7094 | | Washers for use in timber constructions |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 440", "file": "din-440.md", "generated": true, "harvested": "2026-08-05", "id": "din-440", "iso_standard": "ISO 7094", "part_description": "Washers for use in timber constructions", "source_quote": "DIN 440 | ISO 7094 | | Washers for use in timber constructions |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 440 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 444\n\n**Part:** Eyebolts\n\n> DIN 444 | | | Eyebolts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 444", "file": "din-444.md", "generated": true, "harvested": "2026-08-05", "id": "din-444", "part_description": "Eyebolts", "source_quote": "DIN 444 | | | Eyebolts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 444 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 462\n\n**Part:** Machine tools; internal tab washers for slotted round nuts for hook spanner according to DIN 1804\n\n> DIN 462 | | | Machine tools; internal tab washers for slotted round nuts for hook spanner according to DIN 1804 |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 462", "file": "din-462.md", "generated": true, "harvested": "2026-08-05", "id": "din-462", "part_description": "Machine tools; internal tab washers for slotted round nuts for hook spanner according to DIN 1804", "source_quote": "DIN 462 | | | Machine tools; internal tab washers for slotted round nuts for hook spanner according to DIN 1804 |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 462 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 464\n\n**Part:** Knurled Thumb Screws, high type\n\n> DIN 464 | | | Knurled Thumb Screws, high type |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 464", "file": "din-464.md", "generated": true, "harvested": "2026-08-05", "id": "din-464", "part_description": "Knurled Thumb Screws, high type", "source_quote": "DIN 464 | | | Knurled Thumb Screws, high type |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 464 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 466\n\n**Part:** Knurled Nuts, high type\n\n> DIN 466 | | | Knurled Nuts, high type |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 466", "file": "din-466.md", "generated": true, "harvested": "2026-08-05", "id": "din-466", "part_description": "Knurled Nuts, high type", "source_quote": "DIN 466 | | | Knurled Nuts, high type |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 466 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 467\n\n**Part:** Knurled Nuts, low type\n\n> DIN 467 | | | Knurled Nuts, low type |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 467", "file": "din-467.md", "generated": true, "harvested": "2026-08-05", "id": "din-467", "part_description": "Knurled Nuts, low type", "source_quote": "DIN 467 | | | Knurled Nuts, low type |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 467 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 471\n\n**Part:** Circlips (retaining rings) for shafts; normal type and heavy type\n\n> DIN 471 | | | Circlips (retaining rings) for shafts; normal type and heavy type |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 471", "file": "din-471.md", "generated": true, "harvested": "2026-08-05", "id": "din-471", "part_description": "Circlips (retaining rings) for shafts; normal type and heavy type", "source_quote": "DIN 471 | | | Circlips (retaining rings) for shafts; normal type and heavy type |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 471 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 479\n\n**Part:** Square Head Bolts with short dog point\n\n> DIN 479 | | | Square Head Bolts with short dog point |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 479", "file": "din-479.md", "generated": true, "harvested": "2026-08-05", "id": "din-479", "part_description": "Square Head Bolts with short dog point", "source_quote": "DIN 479 | | | Square Head Bolts with short dog point |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 479 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 5406\n\n**Part:** Lock Washers and locking plates for use with rolling bearings\n\n> DIN 5406 | | | Lock Washers and locking plates for use with rolling bearings |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 5406", "file": "din-5406.md", "generated": true, "harvested": "2026-08-05", "id": "din-5406", "part_description": "Lock Washers and locking plates for use with rolling bearings", "source_quote": "DIN 5406 | | | Lock Washers and locking plates for use with rolling bearings |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 5406 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 548\n\n**Part:** Round Nuts with set pin holes inside\n\n> DIN 548 | | | Round Nuts with set pin holes inside |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 548", "file": "din-548.md", "generated": true, "harvested": "2026-08-05", "id": "din-548", "part_description": "Round Nuts with set pin holes inside", "source_quote": "DIN 548 | | | Round Nuts with set pin holes inside |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 548 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 551\n\n**ISO standard:** ISO 4766\n\n**Part:** Slotted Set Screws with flat point\n\n> DIN 551 | ISO 4766 | | Slotted Set Screws with flat point |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 551", "file": "din-551-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-551-2", "iso_standard": "ISO 4766", "part_description": "Slotted Set Screws with flat point", "source_quote": "DIN 551 | ISO 4766 | | Slotted Set Screws with flat point |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 551 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 551\n\n**ISO standard:** ISO 4766\n\n**Part:** Slotted Set Screw \u2013 Flat\n\n**Interchangeability verdict:** Check spec\n\n> Slotted Set Screw \u2013 Flat | DIN 551 | ISO 4766 | Check spec | Slot width/tolerance differences.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 551", "file": "din-551.md", "generated": true, "harvested": "2026-08-05", "id": "din-551", "interchangeability": "Check spec", "iso_standard": "ISO 4766", "part_description": "Slotted Set Screw \u2013 Flat", "source_quote": "Slotted Set Screw \u2013 Flat | DIN 551 | ISO 4766 | Check spec | Slot width/tolerance differences.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 551 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 553\n\n**ISO standard:** ISO 7434\n\n**Part:** Slotted Set Screws with cone point\n\n> DIN 553 | ISO 7434 | | Slotted Set Screws with cone point |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 553", "file": "din-553-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-553-2", "iso_standard": "ISO 7434", "part_description": "Slotted Set Screws with cone point", "source_quote": "DIN 553 | ISO 7434 | | Slotted Set Screws with cone point |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 553 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 553\n\n**ISO standard:** ISO 7434\n\n**Part:** Slotted Set Screw \u2013 Cone\n\n**Interchangeability verdict:** Check spec\n\n> Slotted Set Screw \u2013 Cone | DIN 553 | ISO 7434 | Check spec | Point geometry.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 553", "file": "din-553.md", "generated": true, "harvested": "2026-08-05", "id": "din-553", "interchangeability": "Check spec", "iso_standard": "ISO 7434", "part_description": "Slotted Set Screw \u2013 Cone", "source_quote": "Slotted Set Screw \u2013 Cone | DIN 553 | ISO 7434 | Check spec | Point geometry.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 553 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 555\n\n**ISO standard:** ISO 4034\n\n**Part:** M5 to M100x6 Hexagon Nuts - product grade C\n\n> DIN 555 | ISO 4034 | | M5 to M100x6 Hexagon Nuts - product grade C |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 555", "file": "din-555.md", "generated": true, "harvested": "2026-08-05", "id": "din-555", "iso_standard": "ISO 4034", "part_description": "M5 to M100x6 Hexagon Nuts - product grade C", "source_quote": "DIN 555 | ISO 4034 | | M5 to M100x6 Hexagon Nuts - product grade C |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 555 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 558\n\n**ISO standard:** ISO 4018\n\n**Part:** Hexagon Head Screws\n\n> DIN 558 | ISO 4018 | | Hexagon Head Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 558", "file": "din-558-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-558-2", "iso_standard": "ISO 4018", "part_description": "Hexagon Head Screws", "source_quote": "DIN 558 | ISO 4018 | | Hexagon Head Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 558 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 558\n\n**ISO standard:** ISO 4018\n\n**Part:** Hex Head Bolts (FT), Metric Coarse\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Hex Head Bolts (FT), Metric Coarse | DIN 558 | ISO 4018 | Fully interchangeable | Alt coarse hex FT.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 558", "file": "din-558.md", "generated": true, "harvested": "2026-08-05", "id": "din-558", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 4018", "part_description": "Hex Head Bolts (FT), Metric Coarse", "source_quote": "Hex Head Bolts (FT), Metric Coarse | DIN 558 | ISO 4018 | Fully interchangeable | Alt coarse hex FT.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 558 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 580\n\n**Part:** Collar Eyebolts for lifting purposes\n\n> DIN 580 | | | Collar Eyebolts for lifting purposes |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 580", "file": "din-580.md", "generated": true, "harvested": "2026-08-05", "id": "din-580", "part_description": "Collar Eyebolts for lifting purposes", "source_quote": "DIN 580 | | | Collar Eyebolts for lifting purposes |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 580 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 601\n\n**ISO standard:** ISO 4016\n\n**Part:** M5 to M52 Hexagon Head Bolts; product grade C\n\n> DIN 601 | ISO 4016 | | M5 to M52 Hexagon Head Bolts; product grade C |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 601", "file": "din-601-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-601-2", "iso_standard": "ISO 4016", "part_description": "M5 to M52 Hexagon Head Bolts; product grade C", "source_quote": "DIN 601 | ISO 4016 | | M5 to M52 Hexagon Head Bolts; product grade C |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 601 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 601\n\n**ISO standard:** ISO 4016\n\n**Part:** Hex Head Bolts (PT), Metric Coarse\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Hex Head Bolts (PT), Metric Coarse | DIN 601 | ISO 4016 | Fully interchangeable | Alt coarse hex PT.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 601", "file": "din-601.md", "generated": true, "harvested": "2026-08-05", "id": "din-601", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 4016", "part_description": "Hex Head Bolts (PT), Metric Coarse", "source_quote": "Hex Head Bolts (PT), Metric Coarse | DIN 601 | ISO 4016 | Fully interchangeable | Alt coarse hex PT.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 601 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 603\n\n**Part:** Mushroom Head Square Neck Bolts\n\n> DIN 603 | | | Mushroom Head Square Neck Bolts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 603", "file": "din-603.md", "generated": true, "harvested": "2026-08-05", "id": "din-603", "part_description": "Mushroom Head Square Neck Bolts", "source_quote": "DIN 603 | | | Mushroom Head Square Neck Bolts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 603 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 609\n\n**Part:** Hexagon Fits Bolts with long thread\n\n> DIN 609 | | | Hexagon Fits Bolts with long thread |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 609", "file": "din-609.md", "generated": true, "harvested": "2026-08-05", "id": "din-609", "part_description": "Hexagon Fits Bolts with long thread", "source_quote": "DIN 609 | | | Hexagon Fits Bolts with long thread |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 609 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6319\n\n**Part:** Spherical Washers and conical seats\n\n> DIN 6319 | | | Spherical Washers and conical seats |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6319", "file": "din-6319.md", "generated": true, "harvested": "2026-08-05", "id": "din-6319", "part_description": "Spherical Washers and conical seats", "source_quote": "DIN 6319 | | | Spherical Washers and conical seats |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6319 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6325\n\n**ISO standard:** ISO 8734\n\n**Part:** Parallel Pins, hardened: tolerance zone m6\n\n> DIN 6325 | ISO 8734 | | Parallel Pins, hardened: tolerance zone m6 |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6325", "file": "din-6325.md", "generated": true, "harvested": "2026-08-05", "id": "din-6325", "iso_standard": "ISO 8734", "part_description": "Parallel Pins, hardened: tolerance zone m6", "source_quote": "DIN 6325 | ISO 8734 | | Parallel Pins, hardened: tolerance zone m6 |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6325 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6340\n\n**Part:** Washers for clamping devices\n\n> DIN 6340 | | | Washers for clamping devices |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6340", "file": "din-6340.md", "generated": true, "harvested": "2026-08-05", "id": "din-6340", "part_description": "Washers for clamping devices", "source_quote": "DIN 6340 | | | Washers for clamping devices |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6340 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 653\n\n**Part:** Knurled Thumb Screws, low type\n\n> DIN 653 | | | Knurled Thumb Screws, low type |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 653", "file": "din-653.md", "generated": true, "harvested": "2026-08-05", "id": "din-653", "part_description": "Knurled Thumb Screws, low type", "source_quote": "DIN 653 | | | Knurled Thumb Screws, low type |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 653 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6797\n\n**Part:** Toothed Lock Washers\n\n> DIN 6797 | | | Toothed Lock Washers |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6797", "file": "din-6797.md", "generated": true, "harvested": "2026-08-05", "id": "din-6797", "part_description": "Toothed Lock Washers", "source_quote": "DIN 6797 | | | Toothed Lock Washers |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6797 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6798\n\n**Part:** Serrated Lock Washers\n\n> DIN 6798 | | | Serrated Lock Washers |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6798", "file": "din-6798.md", "generated": true, "harvested": "2026-08-05", "id": "din-6798", "part_description": "Serrated Lock Washers", "source_quote": "DIN 6798 | | | Serrated Lock Washers |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6798 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6799\n\n**Part:** Lock Washers (retaining washers) for shafts\n\n> DIN 6799 | | | Lock Washers (retaining washers) for shafts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6799", "file": "din-6799.md", "generated": true, "harvested": "2026-08-05", "id": "din-6799", "part_description": "Lock Washers (retaining washers) for shafts", "source_quote": "DIN 6799 | | | Lock Washers (retaining washers) for shafts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6799 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6900\n\n**ISO standard:** ISO 10644\n\n**Part:** Screw and Washer assemblies\n\n> DIN 6900 | ISO 10644 | | Screw and Washer assemblies |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6900", "file": "din-6900.md", "generated": true, "harvested": "2026-08-05", "id": "din-6900", "iso_standard": "ISO 10644", "part_description": "Screw and Washer assemblies", "source_quote": "DIN 6900 | ISO 10644 | | Screw and Washer assemblies |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6900 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6901\n\n**ISO standard:** ISO 10510\n\n**Part:** Tapping Screw and Washer assemblies\n\n> DIN 6901 | ISO 10510 | | Tapping Screw and Washer assemblies |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6901", "file": "din-6901.md", "generated": true, "harvested": "2026-08-05", "id": "din-6901", "iso_standard": "ISO 10510", "part_description": "Tapping Screw and Washer assemblies", "source_quote": "DIN 6901 | ISO 10510 | | Tapping Screw and Washer assemblies |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6901 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6902\n\n**ISO standard:** ISO 10673\n\n**Part:** Plain Washers for screw and washer assemblies\n\n> DIN 6902 | ISO 10673 | | Plain Washers for screw and washer assemblies |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6902", "file": "din-6902.md", "generated": true, "harvested": "2026-08-05", "id": "din-6902", "iso_standard": "ISO 10673", "part_description": "Plain Washers for screw and washer assemblies", "source_quote": "DIN 6902 | ISO 10673 | | Plain Washers for screw and washer assemblies |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6902 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6903\n\n**ISO standard:** ISO 10669\n\n**Part:** Plain Washers for tapping screw and washer assemblies\n\n> DIN 6903 | ISO 10669 | | Plain Washers for tapping screw and washer assemblies |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6903", "file": "din-6903.md", "generated": true, "harvested": "2026-08-05", "id": "din-6903", "iso_standard": "ISO 10669", "part_description": "Plain Washers for tapping screw and washer assemblies", "source_quote": "DIN 6903 | ISO 10669 | | Plain Washers for tapping screw and washer assemblies |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6903 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6912\n\n**Part:** Hexagon Socket Thin Head Cap Screws with pilot recess\n\n> DIN 6912 | | | Hexagon Socket Thin Head Cap Screws with pilot recess |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6912", "file": "din-6912.md", "generated": true, "harvested": "2026-08-05", "id": "din-6912", "part_description": "Hexagon Socket Thin Head Cap Screws with pilot recess", "source_quote": "DIN 6912 | | | Hexagon Socket Thin Head Cap Screws with pilot recess |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6912 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6914\n\n**ISO standard:** ISO 14399-4\n\n**Part:** High-strength Hexagon Head Bolts with large widths across flats for structural steel bolting\n\n> DIN 6914 | ISO 14399-4 | | High-strength Hexagon Head Bolts with large widths across flats for structural steel bolting |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6914", "file": "din-6914.md", "generated": true, "harvested": "2026-08-05", "id": "din-6914", "iso_standard": "ISO 14399-4", "part_description": "High-strength Hexagon Head Bolts with large widths across flats for structural steel bolting", "source_quote": "DIN 6914 | ISO 14399-4 | | High-strength Hexagon Head Bolts with large widths across flats for structural steel bolting |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6914 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6916\n\n**Part:** Round Washers for high-strength structural steel bolting\n\n> DIN 6916 | | | Round Washers for high-strength structural steel bolting |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6916", "file": "din-6916.md", "generated": true, "harvested": "2026-08-05", "id": "din-6916", "part_description": "Round Washers for high-strength structural steel bolting", "source_quote": "DIN 6916 | | | Round Washers for high-strength structural steel bolting |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6916 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6921\n\n**ISO standard:** ISO 1665\n\n**Part:** Hexagon Flange Bolts\n\n> DIN 6921 | ISO 1665 | | Hexagon Flange Bolts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6921", "file": "din-6921-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-6921-2", "iso_standard": "ISO 1665", "part_description": "Hexagon Flange Bolts", "source_quote": "DIN 6921 | ISO 1665 | | Hexagon Flange Bolts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6921 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6921\n\n**ISO standard:** DIN EN 1665\n\n**Part:** Hex Head Bolts with Flange\n\n**Interchangeability verdict:** Check spec\n\n> Hex Head Bolts with Flange | DIN 6921 | DIN EN 1665 | Check spec | Flange OD/serrations/tolerance windows.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 6921", "file": "din-6921.md", "generated": true, "harvested": "2026-08-05", "id": "din-6921", "interchangeability": "Check spec", "iso_standard": "DIN EN 1665", "part_description": "Hex Head Bolts with Flange", "source_quote": "Hex Head Bolts with Flange | DIN 6921 | DIN EN 1665 | Check spec | Flange OD/serrations/tolerance windows.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 6921 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6922\n\n**ISO standard:** ISO 1665\n\n**Part:** Hexagon Flange Bolts with reduced shank\n\n> DIN 6922 | ISO 1665 | | Hexagon Flange Bolts with reduced shank |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6922", "file": "din-6922.md", "generated": true, "harvested": "2026-08-05", "id": "din-6922", "iso_standard": "ISO 1665", "part_description": "Hexagon Flange Bolts with reduced shank", "source_quote": "DIN 6922 | ISO 1665 | | Hexagon Flange Bolts with reduced shank |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6922 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6923\n\n**ISO standard:** ISO 1661\n\n**Part:** Hexagon Nuts with flange\n\n> DIN 6923 | ISO 1661 | | Hexagon Nuts with flange |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6923", "file": "din-6923-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-6923-2", "iso_standard": "ISO 1661", "part_description": "Hexagon Nuts with flange", "source_quote": "DIN 6923 | ISO 1661 | | Hexagon Nuts with flange |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6923 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6923\n\n**ISO standard:** DIN EN 1661\n\n**Part:** Hex Nut with Flange\n\n**Interchangeability verdict:** Check spec\n\n> Hex Nut with Flange | DIN 6923 | DIN EN 1661 | Check spec | Flange geometry/tolerance.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 6923", "file": "din-6923.md", "generated": true, "harvested": "2026-08-05", "id": "din-6923", "interchangeability": "Check spec", "iso_standard": "DIN EN 1661", "part_description": "Hex Nut with Flange", "source_quote": "Hex Nut with Flange | DIN 6923 | DIN EN 1661 | Check spec | Flange geometry/tolerance.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 6923 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6924\n\n**ISO standard:** ISO 7040\n\n**Part:** Prevailing torque type Hexagon Nuts with non-metallic insert\n\n> DIN 6924 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6924", "file": "din-6924.md", "generated": true, "harvested": "2026-08-05", "id": "din-6924", "iso_standard": "ISO 7040", "part_description": "Prevailing torque type Hexagon Nuts with non-metallic insert", "source_quote": "DIN 6924 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6924 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6925\n\n**ISO standard:** ISO 7042\n\n**Part:** Prevailing torque type all-metal Hexagon Nuts\n\n> DIN 6925 | ISO 7042 | | Prevailing torque type all-metal Hexagon Nuts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6925", "file": "din-6925.md", "generated": true, "harvested": "2026-08-05", "id": "din-6925", "iso_standard": "ISO 7042", "part_description": "Prevailing torque type all-metal Hexagon Nuts", "source_quote": "DIN 6925 | ISO 7042 | | Prevailing torque type all-metal Hexagon Nuts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6925 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6926\n\n**ISO standard:** ISO 7043\n\n**Part:** Prevailing torque type Hexagon Nuts with flange and with non-metallic insert\n\n> DIN 6926 | ISO 7043 | | Prevailing torque type Hexagon Nuts with flange and with non-metallic insert |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6926", "file": "din-6926-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-6926-2", "iso_standard": "ISO 7043", "part_description": "Prevailing torque type Hexagon Nuts with flange and with non-metallic insert", "source_quote": "DIN 6926 | ISO 7043 | | Prevailing torque type Hexagon Nuts with flange and with non-metallic insert |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6926 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6926\n\n**ISO standard:** DIN EN 1663, 1666\n\n**Part:** Prevailing Torque Flange Nut\n\n**Interchangeability verdict:** Check spec\n\n> Prevailing Torque Flange Nut | DIN 6926 | DIN EN 1663, 1666 | Check spec | Deformation style/serrations differ.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 6926", "file": "din-6926.md", "generated": true, "harvested": "2026-08-05", "id": "din-6926", "interchangeability": "Check spec", "iso_standard": "DIN EN 1663, 1666", "part_description": "Prevailing Torque Flange Nut", "source_quote": "Prevailing Torque Flange Nut | DIN 6926 | DIN EN 1663, 1666 | Check spec | Deformation style/serrations differ.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 6926 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6927\n\n**ISO standard:** ISO 7044\n\n**Part:** Prevailing torque type All-Metal Nuts with flange\n\n> DIN 6927 | ISO 7044 | | Prevailing torque type All-Metal Nuts with flange |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 6927", "file": "din-6927-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-6927-2", "iso_standard": "ISO 7044", "part_description": "Prevailing torque type All-Metal Nuts with flange", "source_quote": "DIN 6927 | ISO 7044 | | Prevailing torque type All-Metal Nuts with flange |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 6927 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 6927\n\n**ISO standard:** DIN EN 1664, 1667\n\n**Part:** Prevailing Torque Flange Nut\n\n**Interchangeability verdict:** Check spec\n\n> Prevailing Torque Flange Nut | DIN 6927 | DIN EN 1664, 1667 | Check spec | Variant series.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 6927", "file": "din-6927.md", "generated": true, "harvested": "2026-08-05", "id": "din-6927", "interchangeability": "Check spec", "iso_standard": "DIN EN 1664, 1667", "part_description": "Prevailing Torque Flange Nut", "source_quote": "Prevailing Torque Flange Nut | DIN 6927 | DIN EN 1664, 1667 | Check spec | Variant series.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 6927 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7045\n\n**Part:** Pan Head Screws with type H or type Z cross recess - product grade A\n\n> DIN 7045 | | | Pan Head Screws with type H or type Z cross recess - product grade A |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7045", "file": "din-7045.md", "generated": true, "harvested": "2026-08-05", "id": "din-7045", "part_description": "Pan Head Screws with type H or type Z cross recess - product grade A", "source_quote": "DIN 7045 | | | Pan Head Screws with type H or type Z cross recess - product grade A |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7045 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7337\n\n**ISO standard:** ISO 14589\n\n**Part:** Break mandrel Blind Rivets\n\n> DIN 7337 | ISO 14589 | | Break mandrel Blind Rivets |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7337", "file": "din-7337.md", "generated": true, "harvested": "2026-08-05", "id": "din-7337", "iso_standard": "ISO 14589", "part_description": "Break mandrel Blind Rivets", "source_quote": "DIN 7337 | ISO 14589 | | Break mandrel Blind Rivets |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7337 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7343\n\n**ISO standard:** ISO 8750\n\n**Part:** Spiral Pins; normal type\n\n> DIN 7343 | ISO 8750 | | Spiral Pins; normal type |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7343", "file": "din-7343.md", "generated": true, "harvested": "2026-08-05", "id": "din-7343", "iso_standard": "ISO 8750", "part_description": "Spiral Pins; normal type", "source_quote": "DIN 7343 | ISO 8750 | | Spiral Pins; normal type |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7343 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7344\n\n**ISO standard:** ISO 8748\n\n**Part:** Spiral Pins; heavy duty type\n\n> DIN 7344 | ISO 8748 | | Spiral Pins; heavy duty type |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7344", "file": "din-7344.md", "generated": true, "harvested": "2026-08-05", "id": "din-7344", "iso_standard": "ISO 8748", "part_description": "Spiral Pins; heavy duty type", "source_quote": "DIN 7344 | ISO 8748 | | Spiral Pins; heavy duty type |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7344 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7346\n\n**ISO standard:** ISO 13337\n\n**Part:** Spring-type Straight Pins; (roll pins) lightweight type\n\n> DIN 7346 | ISO 13337 | | Spring-type Straight Pins; (roll pins) lightweight type |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7346", "file": "din-7346.md", "generated": true, "harvested": "2026-08-05", "id": "din-7346", "iso_standard": "ISO 13337", "part_description": "Spring-type Straight Pins; (roll pins) lightweight type", "source_quote": "DIN 7346 | ISO 13337 | | Spring-type Straight Pins; (roll pins) lightweight type |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7346 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7349\n\n**Part:** Plain Washers for Bolts with heavy clamping sleeves\n\n> DIN 7349 | | | Plain Washers for Bolts with heavy clamping sleeves |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7349", "file": "din-7349.md", "generated": true, "harvested": "2026-08-05", "id": "din-7349", "part_description": "Plain Washers for Bolts with heavy clamping sleeves", "source_quote": "DIN 7349 | | | Plain Washers for Bolts with heavy clamping sleeves |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7349 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7500-1\n\n**ISO standard:** ISO 7085\n\n**Part:** Thread rolling Screws for metric ISO thread - Part 1: Types, designation, requirements\n\n> DIN 7500-1 | ISO 7085 | | Thread rolling Screws for metric ISO thread - Part 1: Types, designation, requirements |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7500-1", "file": "din-7500-1.md", "generated": true, "harvested": "2026-08-05", "id": "din-7500-1", "iso_standard": "ISO 7085", "part_description": "Thread rolling Screws for metric ISO thread - Part 1: Types, designation, requirements", "source_quote": "DIN 7500-1 | ISO 7085 | | Thread rolling Screws for metric ISO thread - Part 1: Types, designation, requirements |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7500-1 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7500-2\n\n**Part:** Thread rolling Screws for ISO metric thread; guideline values for hole diameters\n\n> DIN 7500-2 | | | Thread rolling Screws for ISO metric thread; guideline values for hole diameters |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7500-2", "file": "din-7500-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-7500-2", "part_description": "Thread rolling Screws for ISO metric thread; guideline values for hole diameters", "source_quote": "DIN 7500-2 | | | Thread rolling Screws for ISO metric thread; guideline values for hole diameters |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7500-2 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7504\n\n**Part:** Self-drilling Screws with tapping screw thread - dimensions, requirements and testing\n\n> DIN 7504 | | | Self-drilling Screws with tapping screw thread - dimensions, requirements and testing |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7504", "file": "din-7504.md", "generated": true, "harvested": "2026-08-05", "id": "din-7504", "part_description": "Self-drilling Screws with tapping screw thread - dimensions, requirements and testing", "source_quote": "DIN 7504 | | | Self-drilling Screws with tapping screw thread - dimensions, requirements and testing |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7504 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7513\n\n**Part:** Hexagon Head and slotted head thread cutting screws - dimensions, requirements and testing\n\n> DIN 7513 | | | Hexagon Head and slotted head thread cutting screws - dimensions, requirements and testing |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7513", "file": "din-7513.md", "generated": true, "harvested": "2026-08-05", "id": "din-7513", "part_description": "Hexagon Head and slotted head thread cutting screws - dimensions, requirements and testing", "source_quote": "DIN 7513 | | | Hexagon Head and slotted head thread cutting screws - dimensions, requirements and testing |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7513 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7516\n\n**Part:** Cross recessed head thread cutting screws - dimensions, requirements and testing\n\n> DIN 7516 | | | Cross recessed head thread cutting screws - dimensions, requirements and testing |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7516", "file": "din-7516.md", "generated": true, "harvested": "2026-08-05", "id": "din-7516", "part_description": "Cross recessed head thread cutting screws - dimensions, requirements and testing", "source_quote": "DIN 7516 | | | Cross recessed head thread cutting screws - dimensions, requirements and testing |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7516 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7603\n\n**Part:** Ring Seals and Gaskets\n\n> DIN 7603 | | | Ring Seals and Gaskets |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7603", "file": "din-7603.md", "generated": true, "harvested": "2026-08-05", "id": "din-7603", "part_description": "Ring Seals and Gaskets", "source_quote": "DIN 7603 | | | Ring Seals and Gaskets |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7603 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7970\n\n**ISO standard:** ISO 1478\n\n**Part:** Threads and thread ends for tapping screws (modified version of ISO 1478)\n\n> DIN 7970 | ISO 1478 | | Threads and thread ends for tapping screws (modified version of ISO 1478) |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7970", "file": "din-7970.md", "generated": true, "harvested": "2026-08-05", "id": "din-7970", "iso_standard": "ISO 1478", "part_description": "Threads and thread ends for tapping screws (modified version of ISO 1478)", "source_quote": "DIN 7970 | ISO 1478 | | Threads and thread ends for tapping screws (modified version of ISO 1478) |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7970 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7971\n\n**ISO standard:** ISO 1481\n\n**BS standard:** BS4174\n\n**Part:** Slotted Pan Head Tapping Screws\n\n> DIN 7971 | ISO 1481 | BS4174 | Slotted Pan Head Tapping Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS4174", "din_standard": "DIN 7971", "file": "din-7971.md", "generated": true, "harvested": "2026-08-05", "id": "din-7971", "iso_standard": "ISO 1481", "part_description": "Slotted Pan Head Tapping Screws", "source_quote": "DIN 7971 | ISO 1481 | BS4174 | Slotted Pan Head Tapping Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7971 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7972\n\n**ISO standard:** ISO 1482\n\n**Part:** Slotted Countersunk Head Tapping Screws\n\n> DIN 7972 | ISO 1482 | | Slotted Countersunk Head Tapping Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7972", "file": "din-7972.md", "generated": true, "harvested": "2026-08-05", "id": "din-7972", "iso_standard": "ISO 1482", "part_description": "Slotted Countersunk Head Tapping Screws", "source_quote": "DIN 7972 | ISO 1482 | | Slotted Countersunk Head Tapping Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7972 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7973\n\n**ISO standard:** ISO 1483\n\n**Part:** Slotted Raised Countersunk Head Tapping Screws\n\n> DIN 7973 | ISO 1483 | | Slotted Raised Countersunk Head Tapping Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7973", "file": "din-7973.md", "generated": true, "harvested": "2026-08-05", "id": "din-7973", "iso_standard": "ISO 1483", "part_description": "Slotted Raised Countersunk Head Tapping Screws", "source_quote": "DIN 7973 | ISO 1483 | | Slotted Raised Countersunk Head Tapping Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7973 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7976\n\n**ISO standard:** ISO 1479\n\n**Part:** Hex Head Self-Tapping Screws\n\n**Interchangeability verdict:** Check spec\n\n> Hex Head Self-Tapping Screws | DIN 7976 | ISO 1479 | Check spec | Point/thread form variations.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 7976", "file": "din-7976.md", "generated": true, "harvested": "2026-08-05", "id": "din-7976", "interchangeability": "Check spec", "iso_standard": "ISO 1479", "part_description": "Hex Head Self-Tapping Screws", "source_quote": "Hex Head Self-Tapping Screws | DIN 7976 | ISO 1479 | Check spec | Point/thread form variations.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 7976 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7977\n\n**ISO standard:** ISO 8737\n\n**Part:** Taper Pins with thread ends and constant point lengths\n\n> DIN 7977 | ISO 8737 | | Taper Pins with thread ends and constant point lengths |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7977", "file": "din-7977.md", "generated": true, "harvested": "2026-08-05", "id": "din-7977", "iso_standard": "ISO 8737", "part_description": "Taper Pins with thread ends and constant point lengths", "source_quote": "DIN 7977 | ISO 8737 | | Taper Pins with thread ends and constant point lengths |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7977 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7978\n\n**ISO standard:** ISO 8736\n\n**Part:** Taper Pins with internal thread\n\n> DIN 7978 | ISO 8736 | | Taper Pins with internal thread |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7978", "file": "din-7978.md", "generated": true, "harvested": "2026-08-05", "id": "din-7978", "iso_standard": "ISO 8736", "part_description": "Taper Pins with internal thread", "source_quote": "DIN 7978 | ISO 8736 | | Taper Pins with internal thread |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7978 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7979\n\n**ISO standard:** ISO 8733\n\n**Part:** Parallel Pins with internal thread\n\n> DIN 7979 | ISO 8733 | | Parallel Pins with internal thread |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7979", "file": "din-7979.md", "generated": true, "harvested": "2026-08-05", "id": "din-7979", "iso_standard": "ISO 8733", "part_description": "Parallel Pins with internal thread", "source_quote": "DIN 7979 | ISO 8733 | | Parallel Pins with internal thread |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7979 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7980\n\n**BS standard:** BS4464A\n\n**Part:** Spring Lock Washers with square ends for cheese head screws\n\n> DIN 7980 | | BS4464A | Spring Lock Washers with square ends for cheese head screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS4464A", "din_standard": "DIN 7980", "file": "din-7980.md", "generated": true, "harvested": "2026-08-05", "id": "din-7980", "part_description": "Spring Lock Washers with square ends for cheese head screws", "source_quote": "DIN 7980 | | BS4464A | Spring Lock Washers with square ends for cheese head screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7980 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7981\n\n**ISO standard:** ISO 7049\n\n**Part:** Cross Recessed Pan Head Tapping Screws\n\n> DIN 7981 | ISO 7049 | | Cross Recessed Pan Head Tapping Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7981", "file": "din-7981-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-7981-2", "iso_standard": "ISO 7049", "part_description": "Cross Recessed Pan Head Tapping Screws", "source_quote": "DIN 7981 | ISO 7049 | | Cross Recessed Pan Head Tapping Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7981 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7981\n\n**ISO standard:** ISO 7049\n\n**Part:** Cross Recessed Pan Head Tapping\n\n**Interchangeability verdict:** Check spec\n\n> Cross Recessed Pan Head Tapping | DIN 7981 | ISO 7049 | Check spec | Head/point differences.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 7981", "file": "din-7981.md", "generated": true, "harvested": "2026-08-05", "id": "din-7981", "interchangeability": "Check spec", "iso_standard": "ISO 7049", "part_description": "Cross Recessed Pan Head Tapping", "source_quote": "Cross Recessed Pan Head Tapping | DIN 7981 | ISO 7049 | Check spec | Head/point differences.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 7981 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7982\n\n**ISO standard:** ISO 7050\n\n**Part:** Cross Recessed Countersunk Head Tapping Screws\n\n> DIN 7982 | ISO 7050 | | Cross Recessed Countersunk Head Tapping Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7982", "file": "din-7982-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-7982-2", "iso_standard": "ISO 7050", "part_description": "Cross Recessed Countersunk Head Tapping Screws", "source_quote": "DIN 7982 | ISO 7050 | | Cross Recessed Countersunk Head Tapping Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7982 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7982\n\n**ISO standard:** ISO 7050\n\n**Part:** Cross Recessed Flat Head Tapping\n\n**Interchangeability verdict:** Check spec\n\n> Cross Recessed Flat Head Tapping | DIN 7982 | ISO 7050 | Check spec | Countersink/head angle.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 7982", "file": "din-7982.md", "generated": true, "harvested": "2026-08-05", "id": "din-7982", "interchangeability": "Check spec", "iso_standard": "ISO 7050", "part_description": "Cross Recessed Flat Head Tapping", "source_quote": "Cross Recessed Flat Head Tapping | DIN 7982 | ISO 7050 | Check spec | Countersink/head angle.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 7982 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7983\n\n**ISO standard:** ISO 7051\n\n**Part:** Countersunk (flat) Head Tapping Screws with cross recess\n\n> DIN 7983 | ISO 7051 | | Countersunk (flat) Head Tapping Screws with cross recess |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7983", "file": "din-7983-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-7983-2", "iso_standard": "ISO 7051", "part_description": "Countersunk (flat) Head Tapping Screws with cross recess", "source_quote": "DIN 7983 | ISO 7051 | | Countersunk (flat) Head Tapping Screws with cross recess |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7983 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7983\n\n**ISO standard:** ISO 7051\n\n**Part:** Cross Recessed Raised Countersunk Tapping\n\n**Interchangeability verdict:** Check spec\n\n> Cross Recessed Raised Countersunk Tapping | DIN 7983 | ISO 7051 | Check spec | Raised profile tolerance.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 7983", "file": "din-7983.md", "generated": true, "harvested": "2026-08-05", "id": "din-7983", "interchangeability": "Check spec", "iso_standard": "ISO 7051", "part_description": "Cross Recessed Raised Countersunk Tapping", "source_quote": "Cross Recessed Raised Countersunk Tapping | DIN 7983 | ISO 7051 | Check spec | Raised profile tolerance.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 7983 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7984\n\n**Part:** Hexagon Socket Thin Head Cap Screws\n\n> DIN 7984 | | | Hexagon Socket Thin Head Cap Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7984", "file": "din-7984.md", "generated": true, "harvested": "2026-08-05", "id": "din-7984", "part_description": "Hexagon Socket Thin Head Cap Screws", "source_quote": "DIN 7984 | | | Hexagon Socket Thin Head Cap Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7984 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7985\n\n**ISO standard:** ISO 7045\n\n**BS standard:** BS4183\n\n**Part:** Cross recessed raised Phillips Pan Head Screws\n\n> DIN 7985 | ISO 7045 | BS4183 | Cross recessed raised Phillips Pan Head Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS4183", "din_standard": "DIN 7985", "file": "din-7985-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-7985-2", "iso_standard": "ISO 7045", "part_description": "Cross recessed raised Phillips Pan Head Screws", "source_quote": "DIN 7985 | ISO 7045 | BS4183 | Cross recessed raised Phillips Pan Head Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7985 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7985\n\n**ISO standard:** ISO 7045\n\n**Part:** Cross Recessed Pan Head Screw\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Cross Recessed Pan Head Screw | DIN 7985 | ISO 7045 | Fully interchangeable | General-purpose pan head.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 7985", "file": "din-7985.md", "generated": true, "harvested": "2026-08-05", "id": "din-7985", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 7045", "part_description": "Cross Recessed Pan Head Screw", "source_quote": "Cross Recessed Pan Head Screw | DIN 7985 | ISO 7045 | Fully interchangeable | General-purpose pan head.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 7985 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7989-1\n\n**Part:** Washers for steel structures - product grade C\n\n> DIN 7989-1 | | | Washers for steel structures - product grade C |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7989-1", "file": "din-7989-1.md", "generated": true, "harvested": "2026-08-05", "id": "din-7989-1", "part_description": "Washers for steel structures - product grade C", "source_quote": "DIN 7989-1 | | | Washers for steel structures - product grade C |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7989-1 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7989-2\n\n**Part:** Washers for steel structures - product grade A\n\n> DIN 7989-2 | | | Washers for steel structures - product grade A |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 7989-2", "file": "din-7989-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-7989-2", "part_description": "Washers for steel structures - product grade A", "source_quote": "DIN 7989-2 | | | Washers for steel structures - product grade A |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7989-2 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7991\n\n**ISO standard:** ISO 10642\n\n**BS standard:** BS4168\n\n**Part:** Hexagon Socket Countersunk Head Cap Screws\n\n> DIN 7991 | ISO 10642 | BS4168 | Hexagon Socket Countersunk Head Cap Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS4168", "din_standard": "DIN 7991", "file": "din-7991-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-7991-2", "iso_standard": "ISO 10642", "part_description": "Hexagon Socket Countersunk Head Cap Screws", "source_quote": "DIN 7991 | ISO 10642 | BS4168 | Hexagon Socket Countersunk Head Cap Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 7991 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 7991\n\n**ISO standard:** ISO 10642\n\n**Part:** Flat Head Socket Cap\n\n**Interchangeability verdict:** Check spec\n\n> Flat Head Socket Cap | DIN 7991 | ISO 10642 | Check spec | Head angle/height differences exist.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 7991", "file": "din-7991.md", "generated": true, "harvested": "2026-08-05", "id": "din-7991", "interchangeability": "Check spec", "iso_standard": "ISO 10642", "part_description": "Flat Head Socket Cap", "source_quote": "Flat Head Socket Cap | DIN 7991 | ISO 10642 | Check spec | Head angle/height differences exist.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 7991 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 84\n\n**ISO standard:** ISO 1207\n\n**BS standard:** BS4183\n\n**Part:** Product grade A Slotted Cheese Head Screws\n\n> DIN 84 | ISO 1207 | BS4183 | Product grade A Slotted Cheese Head Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS4183", "din_standard": "DIN 84", "file": "din-84-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-84-2", "iso_standard": "ISO 1207", "part_description": "Product grade A Slotted Cheese Head Screws", "source_quote": "DIN 84 | ISO 1207 | BS4183 | Product grade A Slotted Cheese Head Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 84 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 84\n\n**ISO standard:** ISO 1207\n\n**Part:** Slotted Cheese Head Screw\n\n**Interchangeability verdict:** Check spec\n\n> Slotted Cheese Head Screw | DIN 84 | ISO 1207 | Check spec | Head dia/height tolerances may vary.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 84", "file": "din-84.md", "generated": true, "harvested": "2026-08-05", "id": "din-84", "interchangeability": "Check spec", "iso_standard": "ISO 1207", "part_description": "Slotted Cheese Head Screw", "source_quote": "Slotted Cheese Head Screw | DIN 84 | ISO 1207 | Check spec | Head dia/height tolerances may vary.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 84 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 85\n\n**ISO standard:** ISO 1580\n\n**BS standard:** BS4183\n\n**Part:** Product grade A Slotted Pan Head Screws\n\n> DIN 85 | ISO 1580 | BS4183 | Product grade A Slotted Pan Head Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS4183", "din_standard": "DIN 85", "file": "din-85.md", "generated": true, "harvested": "2026-08-05", "id": "din-85", "iso_standard": "ISO 1580", "part_description": "Product grade A Slotted Pan Head Screws", "source_quote": "DIN 85 | ISO 1580 | BS4183 | Product grade A Slotted Pan Head Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 85 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 9021\n\n**ISO standard:** ISO 7093\n\n**Part:** Plain Washers with large outside diameter\n\n> DIN 9021 | ISO 7093 | | Plain Washers with large outside diameter |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 9021", "file": "din-9021-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-9021-2", "iso_standard": "ISO 7093", "part_description": "Plain Washers with large outside diameter", "source_quote": "DIN 9021 | ISO 7093 | | Plain Washers with large outside diameter |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 9021 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 9021\n\n**ISO standard:** ISO 7093\n\n**Part:** Washer, Plain Large\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Washer, Plain Large | DIN 9021 | ISO 7093 | Fully interchangeable | Large OD series.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 9021", "file": "din-9021.md", "generated": true, "harvested": "2026-08-05", "id": "din-9021", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 7093", "part_description": "Washer, Plain Large", "source_quote": "Washer, Plain Large | DIN 9021 | ISO 7093 | Fully interchangeable | Large OD series.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 9021 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 908\n\n**Part:** Hexagon Socket Screw Plugs with parallel screw thread\n\n> DIN 908 | | | Hexagon Socket Screw Plugs with parallel screw thread |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 908", "file": "din-908.md", "generated": true, "harvested": "2026-08-05", "id": "din-908", "part_description": "Hexagon Socket Screw Plugs with parallel screw thread", "source_quote": "DIN 908 | | | Hexagon Socket Screw Plugs with parallel screw thread |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 908 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 910\n\n**Part:** Hexagon-duty hexagon Head Screw Plugs\n\n> DIN 910 | | | Hexagon-duty hexagon Head Screw Plugs |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 910", "file": "din-910.md", "generated": true, "harvested": "2026-08-05", "id": "din-910", "part_description": "Hexagon-duty hexagon Head Screw Plugs", "source_quote": "DIN 910 | | | Hexagon-duty hexagon Head Screw Plugs |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 910 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 911\n\n**ISO standard:** ISO 2936\n\n**Part:** Hexagon Socket Screw Keys\n\n> DIN 911 | ISO 2936 | | Hexagon Socket Screw Keys |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 911", "file": "din-911.md", "generated": true, "harvested": "2026-08-05", "id": "din-911", "iso_standard": "ISO 2936", "part_description": "Hexagon Socket Screw Keys", "source_quote": "DIN 911 | ISO 2936 | | Hexagon Socket Screw Keys |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 911 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 912\n\n**ISO standard:** ISO 4762\n\n**BS standard:** BS4168\n\n**Part:** Hexagon Socket Head Cap Screws (modified version of ISO 4762)\n\n> DIN 912 | ISO 4762 | BS4168 | Hexagon Socket Head Cap Screws (modified version of ISO 4762) |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS4168", "din_standard": "DIN 912", "file": "din-912-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-912-2", "iso_standard": "ISO 4762", "part_description": "Hexagon Socket Head Cap Screws (modified version of ISO 4762)", "source_quote": "DIN 912 | ISO 4762 | BS4168 | Hexagon Socket Head Cap Screws (modified version of ISO 4762) |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 912 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 912\n\n**ISO standard:** ISO 4762\n\n**Part:** Socket Head Cap Screw, Coarse\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Socket Head Cap Screw, Coarse | DIN 912 | ISO 4762 | Fully interchangeable | Primary SHCS spec (coarse).\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 912", "file": "din-912.md", "generated": true, "harvested": "2026-08-05", "id": "din-912", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 4762", "part_description": "Socket Head Cap Screw, Coarse", "source_quote": "Socket Head Cap Screw, Coarse | DIN 912 | ISO 4762 | Fully interchangeable | Primary SHCS spec (coarse).", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 912 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 913\n\n**ISO standard:** ISO 4026\n\n**Part:** Hexagon Socket Set Screws with flat point (ISO 4026 modified)\n\n> DIN 913 | ISO 4026 | | Hexagon Socket Set Screws with flat point (ISO 4026 modified) |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 913", "file": "din-913-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-913-2", "iso_standard": "ISO 4026", "part_description": "Hexagon Socket Set Screws with flat point (ISO 4026 modified)", "source_quote": "DIN 913 | ISO 4026 | | Hexagon Socket Set Screws with flat point (ISO 4026 modified) |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 913 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 913\n\n**ISO standard:** ISO 4026\n\n**Part:** Socket Set Screw \u2013 Flat Point\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Socket Set Screw \u2013 Flat Point | DIN 913 | ISO 4026 | Fully interchangeable | Headless (grub) screw, flat.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 913", "file": "din-913.md", "generated": true, "harvested": "2026-08-05", "id": "din-913", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 4026", "part_description": "Socket Set Screw \u2013 Flat Point", "source_quote": "Socket Set Screw \u2013 Flat Point | DIN 913 | ISO 4026 | Fully interchangeable | Headless (grub) screw, flat.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 913 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 914\n\n**ISO standard:** ISO 4027\n\n**Part:** Hexagon Socket Set Screws with cone point (ISO 4029 modified)\n\n> DIN 914 | ISO 4027 | | Hexagon Socket Set Screws with cone point (ISO 4029 modified) |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 914", "file": "din-914-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-914-2", "iso_standard": "ISO 4027", "part_description": "Hexagon Socket Set Screws with cone point (ISO 4029 modified)", "source_quote": "DIN 914 | ISO 4027 | | Hexagon Socket Set Screws with cone point (ISO 4029 modified) |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 914 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 914\n\n**ISO standard:** ISO 4027\n\n**Part:** Socket Set Screw \u2013 Cone Point\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Socket Set Screw \u2013 Cone Point | DIN 914 | ISO 4027 | Fully interchangeable | Headless, cone.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 914", "file": "din-914.md", "generated": true, "harvested": "2026-08-05", "id": "din-914", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 4027", "part_description": "Socket Set Screw \u2013 Cone Point", "source_quote": "Socket Set Screw \u2013 Cone Point | DIN 914 | ISO 4027 | Fully interchangeable | Headless, cone.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 914 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 915\n\n**ISO standard:** ISO 4028\n\n**Part:** Hexagon Socket Set Screws with full dog point\n\n> DIN 915 | ISO 4028 | | Hexagon Socket Set Screws with full dog point |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 915", "file": "din-915-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-915-2", "iso_standard": "ISO 4028", "part_description": "Hexagon Socket Set Screws with full dog point", "source_quote": "DIN 915 | ISO 4028 | | Hexagon Socket Set Screws with full dog point |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 915 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 915\n\n**ISO standard:** ISO 4028\n\n**Part:** Socket Set Screw \u2013 Dog Point\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Socket Set Screw \u2013 Dog Point | DIN 915 | ISO 4028 | Fully interchangeable | Headless, dog.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 915", "file": "din-915.md", "generated": true, "harvested": "2026-08-05", "id": "din-915", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 4028", "part_description": "Socket Set Screw \u2013 Dog Point", "source_quote": "Socket Set Screw \u2013 Dog Point | DIN 915 | ISO 4028 | Fully interchangeable | Headless, dog.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 915 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 916\n\n**ISO standard:** ISO 4029\n\n**Part:** Hexagon Socket Set Screws with cup point (ISO 4029 modified)\n\n> DIN 916 | ISO 4029 | | Hexagon Socket Set Screws with cup point (ISO 4029 modified) |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 916", "file": "din-916-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-916-2", "iso_standard": "ISO 4029", "part_description": "Hexagon Socket Set Screws with cup point (ISO 4029 modified)", "source_quote": "DIN 916 | ISO 4029 | | Hexagon Socket Set Screws with cup point (ISO 4029 modified) |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 916 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 916\n\n**ISO standard:** ISO 4029\n\n**Part:** Socket Set Screw \u2013 Cup Point\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Socket Set Screw \u2013 Cup Point | DIN 916 | ISO 4029 | Fully interchangeable | Headless, cup.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 916", "file": "din-916.md", "generated": true, "harvested": "2026-08-05", "id": "din-916", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 4029", "part_description": "Socket Set Screw \u2013 Cup Point", "source_quote": "Socket Set Screw \u2013 Cup Point | DIN 916 | ISO 4029 | Fully interchangeable | Headless, cup.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 916 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 918-3\n\n**Part:** Overview of European standards for fasteners\n\n> DIN 918-3 | | | Overview of European standards for fasteners |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 918-3", "file": "din-918-3.md", "generated": true, "harvested": "2026-08-05", "id": "din-918-3", "part_description": "Overview of European standards for fasteners", "source_quote": "DIN 918-3 | | | Overview of European standards for fasteners |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 918-3 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 921\n\n**Part:** Slotted Pan Head Screws with large head\n\n> DIN 921 | | | Slotted Pan Head Screws with large head |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 921", "file": "din-921.md", "generated": true, "harvested": "2026-08-05", "id": "din-921", "part_description": "Slotted Pan Head Screws with large head", "source_quote": "DIN 921 | | | Slotted Pan Head Screws with large head |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 921 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 923\n\n**Part:** Slotted Pan Head Screws with shoulder\n\n> DIN 923 | | | Slotted Pan Head Screws with shoulder |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 923", "file": "din-923.md", "generated": true, "harvested": "2026-08-05", "id": "din-923", "part_description": "Slotted Pan Head Screws with shoulder", "source_quote": "DIN 923 | | | Slotted Pan Head Screws with shoulder |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 923 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 929\n\n**Part:** Hexagon Weld Nuts\n\n> DIN 929 | | | Hexagon Weld Nuts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 929", "file": "din-929.md", "generated": true, "harvested": "2026-08-05", "id": "din-929", "part_description": "Hexagon Weld Nuts", "source_quote": "DIN 929 | | | Hexagon Weld Nuts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 929 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 93\n\n**Part:** Tab Washers with long tab\n\n> DIN 93 | | | Tab Washers with long tab |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 93", "file": "din-93.md", "generated": true, "harvested": "2026-08-05", "id": "din-93", "part_description": "Tab Washers with long tab", "source_quote": "DIN 93 | | | Tab Washers with long tab |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 93 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 930\n\n**Part:** Fine thread pitch partially Threaded Screws\n\n> DIN 930 | | | Fine thread pitch partially Threaded Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 930", "file": "din-930.md", "generated": true, "harvested": "2026-08-05", "id": "din-930", "part_description": "Fine thread pitch partially Threaded Screws", "source_quote": "DIN 930 | | | Fine thread pitch partially Threaded Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 930 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 931-1\n\n**ISO standard:** ISO 4014\n\n**BS standard:** BS3692\n\n**Part:** M1,6 to M39 Hexagon Cap Screws partially threaded - product grades A and B\n\n> DIN 931-1 | ISO 4014 | BS3692 | M1,6 to M39 Hexagon Cap Screws partially threaded - product grades A and B |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS3692", "din_standard": "DIN 931-1", "file": "din-931-1.md", "generated": true, "harvested": "2026-08-05", "id": "din-931-1", "iso_standard": "ISO 4014", "part_description": "M1,6 to M39 Hexagon Cap Screws partially threaded - product grades A and B", "source_quote": "DIN 931-1 | ISO 4014 | BS3692 | M1,6 to M39 Hexagon Cap Screws partially threaded - product grades A and B |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 931-1 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 931-2\n\n**ISO standard:** ISO 4014\n\n**BS standard:** BS3692\n\n**Part:** M42 to M160x6 Hexagon Cap Screws partially threaded - product grade B\n\n> DIN 931-2 | ISO 4014 | BS3692 | M42 to M160x6 Hexagon Cap Screws partially threaded - product grade B |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS3692", "din_standard": "DIN 931-2", "file": "din-931-2-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-931-2-2", "iso_standard": "ISO 4014", "part_description": "M42 to M160x6 Hexagon Cap Screws partially threaded - product grade B", "source_quote": "DIN 931-2 | ISO 4014 | BS3692 | M42 to M160x6 Hexagon Cap Screws partially threaded - product grade B |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 931-2 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 931\n\n**ISO standard:** ISO 4014\n\n**Part:** Hex Head Bolts (PT), Metric Coarse\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Hex Head Bolts (PT), Metric Coarse | DIN 931 | ISO 4014 | Fully interchangeable | Partial thread hex bolts.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 931", "file": "din-931-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-931-2", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 4014", "part_description": "Hex Head Bolts (PT), Metric Coarse", "source_quote": "Hex Head Bolts (PT), Metric Coarse | DIN 931 | ISO 4014 | Fully interchangeable | Partial thread hex bolts.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 931 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 931\n\n**ISO standard:** ISO 4014\n\n**Part:** Sechskantschrauben mit Teilgewinde\n\n**Interchangeability verdict:** dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen\n\n> ISO 4014/4017 Sechskantschrauben Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zur\u00fcckgezogen wurden. Die entsprechenden ISO \u2013 Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zur\u00fcckgezogenen DIN \u2013 Normen. Dadurch sind grunds\u00e4tzliche keine Einschr\u00e4nkungen bei der Verwendungen dieser ISO \u2013 Normen zu erwarten. Allerdings sollte beachtet werden, dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen.\n\nSource: <https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php>\n", "din_standard": "DIN 931", "file": "din-931.md", "generated": true, "harvested": "2026-08-05", "id": "din-931", "interchangeability": "dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen", "iso_standard": "ISO 4014", "part_description": "Sechskantschrauben mit Teilgewinde", "source_quote": "ISO 4014/4017 Sechskantschrauben Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zur\u00fcckgezogen wurden. Die entsprechenden ISO \u2013 Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zur\u00fcckgezogenen DIN \u2013 Normen. Dadurch sind grunds\u00e4tzliche keine Einschr\u00e4nkungen bei der Verwendungen dieser ISO \u2013 Normen zu erwarten. Allerdings sollte beachtet werden, dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen.", "sources": ["https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php"], "stale_after": "2029-08-04", "title": "DIN 931 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "unverified_fields": "part_description", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 933\n\n**ISO standard:** ISO 4017\n\n**Part:** Hex Head Bolts (FT), Metric Coarse\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Hex Head Bolts (FT), Metric Coarse | DIN 933 | ISO 4017 | Fully interchangeable | Full thread hex bolts.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 933", "file": "din-933-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-933-2", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 4017", "part_description": "Hex Head Bolts (FT), Metric Coarse", "source_quote": "Hex Head Bolts (FT), Metric Coarse | DIN 933 | ISO 4017 | Fully interchangeable | Full thread hex bolts.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 933 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 933\n\n**ISO standard:** ISO 4017\n\n**BS standard:** BS3692\n\n**Part:** M1,6 to M52 Hexagon Cap Screws fully threaded - product grades 8.8\n\n> DIN 933 | ISO 4017 | BS3692 | M1,6 to M52 Hexagon Cap Screws fully threaded - product grades 8.8 |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS3692", "din_standard": "DIN 933", "file": "din-933-3.md", "generated": true, "harvested": "2026-08-05", "id": "din-933-3", "iso_standard": "ISO 4017", "part_description": "M1,6 to M52 Hexagon Cap Screws fully threaded - product grades 8.8", "source_quote": "DIN 933 | ISO 4017 | BS3692 | M1,6 to M52 Hexagon Cap Screws fully threaded - product grades 8.8 |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 933 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 933\n\n**ISO standard:** ISO 4017\n\n**Part:** Sechskantschrauben mit Vollgewinde\n\n**Interchangeability verdict:** dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen\n\n> DIN 933/931 und ISO 4014/4017 Sechskantschrauben Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zur\u00fcckgezogen wurden. Die entsprechenden ISO \u2013 Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zur\u00fcckgezogenen DIN \u2013 Normen. Dadurch sind grunds\u00e4tzliche keine Einschr\u00e4nkungen bei der Verwendungen dieser ISO \u2013 Normen zu erwarten. Allerdings sollte beachtet werden, dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen.\n\nSource: <https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php>\n", "din_standard": "DIN 933", "file": "din-933.md", "generated": true, "harvested": "2026-08-05", "id": "din-933", "interchangeability": "dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen", "iso_standard": "ISO 4017", "part_description": "Sechskantschrauben mit Vollgewinde", "source_quote": "DIN 933/931 und ISO 4014/4017 Sechskantschrauben Die Normen DIN 931 und DIN 933 sind schon vor vielen Jahren zur\u00fcckgezogen wurden. Die entsprechenden ISO \u2013 Nachfolgenormen ISO 4014 und ISO 4017 entsprechen weitestgehend den zur\u00fcckgezogenen DIN \u2013 Normen. Dadurch sind grunds\u00e4tzliche keine Einschr\u00e4nkungen bei der Verwendungen dieser ISO \u2013 Normen zu erwarten. Allerdings sollte beachtet werden, dass sich bei den Abmessungen M10, M12, M14 und M22 die Schl\u00fcsselweiten ge\u00e4ndert haben und somit andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen.", "sources": ["https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php"], "stale_after": "2029-08-04", "title": "DIN 933 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "unverified_fields": "part_description", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 934\n\n**ISO standard:** ISO 4032\n\n**Part:** Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B\n\n> DIN 934 | ISO 4032 | | Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 934", "file": "din-934.md", "generated": true, "harvested": "2026-08-05", "id": "din-934", "iso_standard": "ISO 4032", "part_description": "Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B", "source_quote": "DIN 934 | ISO 4032 | | Hexagon Nuts with metric coarse and fine pitch thread - product classes A and B |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 934 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 935-1\n\n**Part:** Hexagon Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - product grades A and B\n\n> DIN 935-1 | | | Hexagon Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - product grades A and B |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 935-1", "file": "din-935-1.md", "generated": true, "harvested": "2026-08-05", "id": "din-935-1", "part_description": "Hexagon Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - product grades A and B", "source_quote": "DIN 935-1 | | | Hexagon Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - product grades A and B |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 935-1 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 935-2\n\n**Part:** M42 to M160x6 Hexagon Head Bolts; product grade B\n\n> DIN 935-2 | | | M42 to M160x6 Hexagon Head Bolts; product grade B |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 935-2", "file": "din-935-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-935-2", "part_description": "M42 to M160x6 Hexagon Head Bolts; product grade B", "source_quote": "DIN 935-2 | | | M42 to M160x6 Hexagon Head Bolts; product grade B |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 935-2 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 935-3\n\n**Part:** Hexagon Slotted Nuts with metric coarse pitch thread - product grade C\n\n> DIN 935-3 | | | Hexagon Slotted Nuts with metric coarse pitch thread - product grade C |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 935-3", "file": "din-935-3.md", "generated": true, "harvested": "2026-08-05", "id": "din-935-3", "part_description": "Hexagon Slotted Nuts with metric coarse pitch thread - product grade C", "source_quote": "DIN 935-3 | | | Hexagon Slotted Nuts with metric coarse pitch thread - product grade C |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 935-3 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 936\n\n**BS standard:** BS3692\n\n**Part:** M8 to M52 and M8x1 to M52x3 hexagon thin nuts; product grades A and B\n\n> DIN 936 | | BS3692 | M8 to M52 and M8x1 to M52x3 hexagon thin nuts; product grades A and B |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS3692", "din_standard": "DIN 936", "file": "din-936.md", "generated": true, "harvested": "2026-08-05", "id": "din-936", "part_description": "M8 to M52 and M8x1 to M52x3 hexagon thin nuts; product grades A and B", "source_quote": "DIN 936 | | BS3692 | M8 to M52 and M8x1 to M52x3 hexagon thin nuts; product grades A and B |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 936 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 937\n\n**Part:** Hexagon Thin Castle Nuts\n\n> DIN 937 | | | Hexagon Thin Castle Nuts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 937", "file": "din-937.md", "generated": true, "harvested": "2026-08-05", "id": "din-937", "part_description": "Hexagon Thin Castle Nuts", "source_quote": "DIN 937 | | | Hexagon Thin Castle Nuts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 937 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 938\n\n**Part:** Studs with a length of engagement equal to about 1 d\n\n> DIN 938 | | | Studs with a length of engagement equal to about 1 d |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 938", "file": "din-938.md", "generated": true, "harvested": "2026-08-05", "id": "din-938", "part_description": "Studs with a length of engagement equal to about 1 d", "source_quote": "DIN 938 | | | Studs with a length of engagement equal to about 1 d |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 938 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 939\n\n**Part:** Studs with a length of engagement equal to about 1,25 d\n\n> DIN 939 | | | Studs with a length of engagement equal to about 1,25 d |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 939", "file": "din-939.md", "generated": true, "harvested": "2026-08-05", "id": "din-939", "part_description": "Studs with a length of engagement equal to about 1,25 d", "source_quote": "DIN 939 | | | Studs with a length of engagement equal to about 1,25 d |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 939 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 94\n\n**ISO standard:** ISO 1234\n\n**Part:** Split Pins\n\n> DIN 94 | ISO 1234 | | Split Pins |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 94", "file": "din-94.md", "generated": true, "harvested": "2026-08-05", "id": "din-94", "iso_standard": "ISO 1234", "part_description": "Split Pins", "source_quote": "DIN 94 | ISO 1234 | | Split Pins |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 94 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 95\n\n**Part:** Slotted Raised Countersunk (oval) Head Wood Screws\n\n> DIN 95 | | | Slotted Raised Countersunk (oval) Head Wood Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 95", "file": "din-95.md", "generated": true, "harvested": "2026-08-05", "id": "din-95", "part_description": "Slotted Raised Countersunk (oval) Head Wood Screws", "source_quote": "DIN 95 | | | Slotted Raised Countersunk (oval) Head Wood Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 95 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 96\n\n**Part:** Slotted Round Head Wood Screws\n\n> DIN 96 | | | Slotted Round Head Wood Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 96", "file": "din-96.md", "generated": true, "harvested": "2026-08-05", "id": "din-96", "part_description": "Slotted Round Head Wood Screws", "source_quote": "DIN 96 | | | Slotted Round Head Wood Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 96 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 960\n\n**ISO standard:** ISO 8765\n\n**Part:** M8x1 to M100x4 Hexagon Head Bolts with fine pitch thread - product grades A and B\n\n> DIN 960 | ISO 8765 | | M8x1 to M100x4 Hexagon Head Bolts with fine pitch thread - product grades A and B |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 960", "file": "din-960-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-960-2", "iso_standard": "ISO 8765", "part_description": "M8x1 to M100x4 Hexagon Head Bolts with fine pitch thread - product grades A and B", "source_quote": "DIN 960 | ISO 8765 | | M8x1 to M100x4 Hexagon Head Bolts with fine pitch thread - product grades A and B |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 960 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 960\n\n**ISO standard:** ISO 8765\n\n**Part:** Hex Head Bolts (PT), Metric Fine\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Hex Head Bolts (PT), Metric Fine | DIN 960 | ISO 8765 | Fully interchangeable | Fine thread PT.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 960", "file": "din-960.md", "generated": true, "harvested": "2026-08-05", "id": "din-960", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 8765", "part_description": "Hex Head Bolts (PT), Metric Fine", "source_quote": "Hex Head Bolts (PT), Metric Fine | DIN 960 | ISO 8765 | Fully interchangeable | Fine thread PT.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 960 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 961\n\n**ISO standard:** ISO 8676\n\n**Part:** M8x1 to M52x3 Hexagon Head Bolts with fine pitch thread - product grades A and B\n\n> DIN 961 | ISO 8676 | | M8x1 to M52x3 Hexagon Head Bolts with fine pitch thread - product grades A and B |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 961", "file": "din-961-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-961-2", "iso_standard": "ISO 8676", "part_description": "M8x1 to M52x3 Hexagon Head Bolts with fine pitch thread - product grades A and B", "source_quote": "DIN 961 | ISO 8676 | | M8x1 to M52x3 Hexagon Head Bolts with fine pitch thread - product grades A and B |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 961 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 961\n\n**ISO standard:** ISO 8676\n\n**Part:** Hex Head Bolts (FT), Metric Fine\n\n**Interchangeability verdict:** Fully interchangeable\n\n> Hex Head Bolts (FT), Metric Fine | DIN 961 | ISO 8676 | Fully interchangeable | Fine thread FT.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 961", "file": "din-961.md", "generated": true, "harvested": "2026-08-05", "id": "din-961", "interchangeability": "Fully interchangeable", "iso_standard": "ISO 8676", "part_description": "Hex Head Bolts (FT), Metric Fine", "source_quote": "Hex Head Bolts (FT), Metric Fine | DIN 961 | ISO 8676 | Fully interchangeable | Fine thread FT.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 961 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 962\n\n**Part:** Designation system for fasteners\n\n> DIN 962 | | | Designation system for fasteners |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 962", "file": "din-962.md", "generated": true, "harvested": "2026-08-05", "id": "din-962", "part_description": "Designation system for fasteners", "source_quote": "DIN 962 | | | Designation system for fasteners |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 962 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 963\n\n**ISO standard:** ISO 2009\n\n**BS standard:** BS3692\n\n**Part:** Slotted Countersunk Head Screws (with countersunk heads as specified in ISO 2009-1972)\n\n> DIN 963 | ISO 2009 | BS3692 | Slotted Countersunk Head Screws (with countersunk heads as specified in ISO 2009-1972) |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS3692", "din_standard": "DIN 963", "file": "din-963-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-963-2", "iso_standard": "ISO 2009", "part_description": "Slotted Countersunk Head Screws (with countersunk heads as specified in ISO 2009-1972)", "source_quote": "DIN 963 | ISO 2009 | BS3692 | Slotted Countersunk Head Screws (with countersunk heads as specified in ISO 2009-1972) |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 963 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 963\n\n**ISO standard:** ISO 2009\n\n**Part:** Slotted Flat Head (Countersunk)\n\n**Interchangeability verdict:** Check spec\n\n> Slotted Flat Head (Countersunk) | DIN 963 | ISO 2009 | Check spec | Countersink/head geometry differences.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 963", "file": "din-963.md", "generated": true, "harvested": "2026-08-05", "id": "din-963", "interchangeability": "Check spec", "iso_standard": "ISO 2009", "part_description": "Slotted Flat Head (Countersunk)", "source_quote": "Slotted Flat Head (Countersunk) | DIN 963 | ISO 2009 | Check spec | Countersink/head geometry differences.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 963 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 964\n\n**ISO standard:** ISO 2010\n\n**BS standard:** BS3692\n\n**Part:** Slotted Raised Countersunk Oval Head Screws\n\n> DIN 964 | ISO 2010 | BS3692 | Slotted Raised Countersunk Oval Head Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS3692", "din_standard": "DIN 964", "file": "din-964-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-964-2", "iso_standard": "ISO 2010", "part_description": "Slotted Raised Countersunk Oval Head Screws", "source_quote": "DIN 964 | ISO 2010 | BS3692 | Slotted Raised Countersunk Oval Head Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 964 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 964\n\n**ISO standard:** ISO 2010\n\n**Part:** Slotted Raised Countersunk\n\n**Interchangeability verdict:** Check spec\n\n> Slotted Raised Countersunk | DIN 964 | ISO 2010 | Check spec | Raised profile may differ slightly.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 964", "file": "din-964.md", "generated": true, "harvested": "2026-08-05", "id": "din-964", "interchangeability": "Check spec", "iso_standard": "ISO 2010", "part_description": "Slotted Raised Countersunk", "source_quote": "Slotted Raised Countersunk | DIN 964 | ISO 2010 | Check spec | Raised profile may differ slightly.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 964 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 965\n\n**ISO standard:** ISO 7046\n\n**BS standard:** BS3692\n\n**Part:** Cross Recessed Countersunk Flat Head Screws\n\n> DIN 965 | ISO 7046 | BS3692 | Cross Recessed Countersunk Flat Head Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "bs_standard": "BS3692", "din_standard": "DIN 965", "file": "din-965-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-965-2", "iso_standard": "ISO 7046", "part_description": "Cross Recessed Countersunk Flat Head Screws", "source_quote": "DIN 965 | ISO 7046 | BS3692 | Cross Recessed Countersunk Flat Head Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 965 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 965\n\n**ISO standard:** ISO 7046\n\n**Part:** Cross Recessed Flat Head\n\n**Interchangeability verdict:** Check spec\n\n> Cross Recessed Flat Head | DIN 965 | ISO 7046 | Check spec | Head/countersink geometry.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 965", "file": "din-965.md", "generated": true, "harvested": "2026-08-05", "id": "din-965", "interchangeability": "Check spec", "iso_standard": "ISO 7046", "part_description": "Cross Recessed Flat Head", "source_quote": "Cross Recessed Flat Head | DIN 965 | ISO 7046 | Check spec | Head/countersink geometry.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 965 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 966\n\n**ISO standard:** ISO 7047\n\n**Part:** Cross Recessed Raised Countersunk Head Screws\n\n> DIN 966 | ISO 7047 | | Cross Recessed Raised Countersunk Head Screws |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 966", "file": "din-966-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-966-2", "iso_standard": "ISO 7047", "part_description": "Cross Recessed Raised Countersunk Head Screws", "source_quote": "DIN 966 | ISO 7047 | | Cross Recessed Raised Countersunk Head Screws |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 966 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 966\n\n**ISO standard:** ISO 7047\n\n**Part:** Cross Recessed Raised Countersunk\n\n**Interchangeability verdict:** Check spec\n\n> Cross Recessed Raised Countersunk | DIN 966 | ISO 7047 | Check spec | Raised profile/diameter tolerance.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 966", "file": "din-966.md", "generated": true, "harvested": "2026-08-05", "id": "din-966", "interchangeability": "Check spec", "iso_standard": "ISO 7047", "part_description": "Cross Recessed Raised Countersunk", "source_quote": "Cross Recessed Raised Countersunk | DIN 966 | ISO 7047 | Check spec | Raised profile/diameter tolerance.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 966 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 970\n\n**ISO standard:** ISO 4032\n\n**Part:** Hexagon Nuts; style 1; metric coarse thread, product grades A and B; ISO 4032 modified\n\n> DIN 970 | ISO 4032 | | Hexagon Nuts; style 1; metric coarse thread, product grades A and B; ISO 4032 modified |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 970", "file": "din-970.md", "generated": true, "harvested": "2026-08-05", "id": "din-970", "iso_standard": "ISO 4032", "part_description": "Hexagon Nuts; style 1; metric coarse thread, product grades A and B; ISO 4032 modified", "source_quote": "DIN 970 | ISO 4032 | | Hexagon Nuts; style 1; metric coarse thread, product grades A and B; ISO 4032 modified |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 970 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 971-1\n\n**ISO standard:** ISO 8673\n\n**Part:** Style 1 Hexagon Nuts with metric fine pitch thread; property classes 6 and 8\n\n> DIN 971-1 | ISO 8673 | | Style 1 Hexagon Nuts with metric fine pitch thread; property classes 6 and 8 |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 971-1", "file": "din-971-1.md", "generated": true, "harvested": "2026-08-05", "id": "din-971-1", "iso_standard": "ISO 8673", "part_description": "Style 1 Hexagon Nuts with metric fine pitch thread; property classes 6 and 8", "source_quote": "DIN 971-1 | ISO 8673 | | Style 1 Hexagon Nuts with metric fine pitch thread; property classes 6 and 8 |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 971-1 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 971-2\n\n**ISO standard:** ISO 8674\n\n**Part:** Style 2 Hexagon Nuts with metric fine pitch thread; property classes 10 and 12\n\n> DIN 971-2 | ISO 8674 | | Style 2 Hexagon Nuts with metric fine pitch thread; property classes 10 and 12 |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 971-2", "file": "din-971-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-971-2", "iso_standard": "ISO 8674", "part_description": "Style 2 Hexagon Nuts with metric fine pitch thread; property classes 10 and 12", "source_quote": "DIN 971-2 | ISO 8674 | | Style 2 Hexagon Nuts with metric fine pitch thread; property classes 10 and 12 |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 971-2 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 972\n\n**ISO standard:** ISO 4034\n\n**Part:** M5 to M39 Hexagon Nuts; style 1; product grade C (modified version of ISO 4034)\n\n> DIN 972 | ISO 4034 | | M5 to M39 Hexagon Nuts; style 1; product grade C (modified version of ISO 4034) |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 972", "file": "din-972.md", "generated": true, "harvested": "2026-08-05", "id": "din-972", "iso_standard": "ISO 4034", "part_description": "M5 to M39 Hexagon Nuts; style 1; product grade C (modified version of ISO 4034)", "source_quote": "DIN 972 | ISO 4034 | | M5 to M39 Hexagon Nuts; style 1; product grade C (modified version of ISO 4034) |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 972 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 975\n\n**Part:** Threaded Rods\n\n> DIN 975 | | | Threaded Rods |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 975", "file": "din-975.md", "generated": true, "harvested": "2026-08-05", "id": "din-975", "part_description": "Threaded Rods", "source_quote": "DIN 975 | | | Threaded Rods |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 975 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 976-1\n\n**Part:** Metric thread Stud Bolts\n\n> DIN 976-1 | | | Metric thread Stud Bolts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 976-1", "file": "din-976-1.md", "generated": true, "harvested": "2026-08-05", "id": "din-976-1", "part_description": "Metric thread Stud Bolts", "source_quote": "DIN 976-1 | | | Metric thread Stud Bolts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 976-1 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 976-2\n\n**Part:** Metric interference-fit thread Stud Bolts\n\n> DIN 976-2 | | | Metric interference-fit thread Stud Bolts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 976-2", "file": "din-976-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-976-2", "part_description": "Metric interference-fit thread Stud Bolts", "source_quote": "DIN 976-2 | | | Metric interference-fit thread Stud Bolts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 976-2 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 977\n\n**ISO standard:** ISO 21670\n\n**Part:** Hexagon Weld Nuts with flange\n\n> DIN 977 | ISO 21670 | | Hexagon Weld Nuts with flange |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 977", "file": "din-977-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-977-2", "iso_standard": "ISO 21670", "part_description": "Hexagon Weld Nuts with flange", "source_quote": "DIN 977 | ISO 21670 | | Hexagon Weld Nuts with flange |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 977 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 977\n\n**ISO standard:** ISO 21670\n\n**Part:** Hex Weld Nut with Flange\n\n**Interchangeability verdict:** Check spec\n\n> Hex Weld Nut with Flange | DIN 977 | ISO 21670 | Check spec | Weld bosses/OD differ by series.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 977", "file": "din-977.md", "generated": true, "harvested": "2026-08-05", "id": "din-977", "interchangeability": "Check spec", "iso_standard": "ISO 21670", "part_description": "Hex Weld Nut with Flange", "source_quote": "Hex Weld Nut with Flange | DIN 977 | ISO 21670 | Check spec | Weld bosses/OD differ by series.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 977 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 979\n\n**Part:** Hexagon Thin Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - Product grades A and B\n\n> DIN 979 | | | Hexagon Thin Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - Product grades A and B |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 979", "file": "din-979.md", "generated": true, "harvested": "2026-08-05", "id": "din-979", "part_description": "Hexagon Thin Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - Product grades A and B", "source_quote": "DIN 979 | | | Hexagon Thin Slotted Nuts and Castle Nuts with metric coarse and fine pitch thread - Product grades A and B |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 979 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 980, 6925\n\n**ISO standard:** ISO 7042, 10513\n\n**Part:** Prevailing Torque All-Metal Nut\n\n**Interchangeability verdict:** Check spec\n\n> Prevailing Torque All-Metal Nut | DIN 980, 6925 | ISO 7042, 10513 | Check spec | Prevail torque requirements vary.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 980, 6925", "file": "din-980-6925.md", "generated": true, "harvested": "2026-08-05", "id": "din-980-6925", "interchangeability": "Check spec", "iso_standard": "ISO 7042, 10513", "part_description": "Prevailing Torque All-Metal Nut", "source_quote": "Prevailing Torque All-Metal Nut | DIN 980, 6925 | ISO 7042, 10513 | Check spec | Prevail torque requirements vary.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 980, 6925 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 980\n\n**ISO standard:** ISO 7042\n\n**Part:** All-metal prevailing torque type Hexagon Nuts\n\n> DIN 980 | ISO 7042 | | All-metal prevailing torque type Hexagon Nuts |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 980", "file": "din-980.md", "generated": true, "harvested": "2026-08-05", "id": "din-980", "iso_standard": "ISO 7042", "part_description": "All-metal prevailing torque type Hexagon Nuts", "source_quote": "DIN 980 | ISO 7042 | | All-metal prevailing torque type Hexagon Nuts |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 980 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 981\n\n**Part:** Locknuts for use with rolling bearings\n\n> DIN 981 | | | Locknuts for use with rolling bearings |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 981", "file": "din-981.md", "generated": true, "harvested": "2026-08-05", "id": "din-981", "part_description": "Locknuts for use with rolling bearings", "source_quote": "DIN 981 | | | Locknuts for use with rolling bearings |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 981 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 982, 6924\n\n**ISO standard:** ISO 7040, 10512\n\n**Part:** Prevailing Torque Nylon Insert Nut\n\n**Interchangeability verdict:** Check spec\n\n> Prevailing Torque Nylon Insert Nut | DIN 982, 6924 | ISO 7040, 10512 | Check spec | Insert height/torque windows.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 982, 6924", "file": "din-982-6924.md", "generated": true, "harvested": "2026-08-05", "id": "din-982-6924", "interchangeability": "Check spec", "iso_standard": "ISO 7040, 10512", "part_description": "Prevailing Torque Nylon Insert Nut", "source_quote": "Prevailing Torque Nylon Insert Nut | DIN 982, 6924 | ISO 7040, 10512 | Check spec | Insert height/torque windows.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 982, 6924 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 982\n\n**ISO standard:** ISO 7040\n\n**Part:** Prevailing torque type Hexagon Nuts with non-metallic insert\n\n> DIN 982 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 982", "file": "din-982.md", "generated": true, "harvested": "2026-08-05", "id": "din-982", "iso_standard": "ISO 7040", "part_description": "Prevailing torque type Hexagon Nuts with non-metallic insert", "source_quote": "DIN 982 | ISO 7040 | | Prevailing torque type Hexagon Nuts with non-metallic insert |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 982 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 983\n\n**Part:** Retaining Rings with lugs for use on shafts (external circlips)\n\n> DIN 983 | | | Retaining Rings with lugs for use on shafts (external circlips) |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 983", "file": "din-983.md", "generated": true, "harvested": "2026-08-05", "id": "din-983", "part_description": "Retaining Rings with lugs for use on shafts (external circlips)", "source_quote": "DIN 983 | | | Retaining Rings with lugs for use on shafts (external circlips) |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 983 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 985\n\n**ISO standard:** ISO 10511\n\n**Part:** Prevailing torque type Hexagon Thin Nuts with non-metallic insert\n\n> DIN 985 | ISO 10511 | | Prevailing torque type Hexagon Thin Nuts with non-metallic insert |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 985", "file": "din-985-2.md", "generated": true, "harvested": "2026-08-05", "id": "din-985-2", "iso_standard": "ISO 10511", "part_description": "Prevailing torque type Hexagon Thin Nuts with non-metallic insert", "source_quote": "DIN 985 | ISO 10511 | | Prevailing torque type Hexagon Thin Nuts with non-metallic insert |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 985 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 985\n\n**ISO standard:** ISO 10511\n\n**Part:** Nylon Insert Lock Nut (thin)\n\n**Interchangeability verdict:** Check spec\n\n> Nylon Insert Lock Nut (thin) | DIN 985 | ISO 10511 | Check spec | Thin pattern; verify heights.\n\nSource: <https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners>\n", "din_standard": "DIN 985", "file": "din-985.md", "generated": true, "harvested": "2026-08-05", "id": "din-985", "interchangeability": "Check spec", "iso_standard": "ISO 10511", "part_description": "Nylon Insert Lock Nut (thin)", "source_quote": "Nylon Insert Lock Nut (thin) | DIN 985 | ISO 10511 | Check spec | Thin pattern; verify heights.", "sources": ["https://monsterbolts.com/pages/common-din-numbers-for-metric-fasteners"], "stale_after": "2029-08-04", "title": "DIN 985 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 986\n\n**Part:** Prevailing torque type Hexagon Domed Cap Nuts with non-metallic insert\n\n> DIN 986 | | | Prevailing torque type Hexagon Domed Cap Nuts with non-metallic insert |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 986", "file": "din-986.md", "generated": true, "harvested": "2026-08-05", "id": "din-986", "part_description": "Prevailing torque type Hexagon Domed Cap Nuts with non-metallic insert", "source_quote": "DIN 986 | | | Prevailing torque type Hexagon Domed Cap Nuts with non-metallic insert |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 986 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 988\n\n**Part:** Shim Rings and supporting rings\n\n> DIN 988 | | | Shim Rings and supporting rings |\n\nSource: <https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards>\n", "din_standard": "DIN 988", "file": "din-988.md", "generated": true, "harvested": "2026-08-05", "id": "din-988", "part_description": "Shim Rings and supporting rings", "source_quote": "DIN 988 | | | Shim Rings and supporting rings |", "sources": ["https://www.trfastenings.com/knowledge-base/engineering-data/fastener-standards"], "stale_after": "2029-08-04", "title": "DIN 988 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 933\n\n**ISO standard:** ISO 4017\n\n**Part:** Sechskantschrauben mit Vollgewinde\n\n**Size:** M10\n\n**Dimension that differs:** Schl\u00fcsselweite\n\n**DIN value:** 17 mm\n\n**ISO value:** 16 mm\n\n**Interchangeability verdict:** andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen\n\n> andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen. Eine \u00dcbersicht der \u00c4nderung k\u00f6nnen Sie der Tabelle entnehmen. Nenndurchmesser | M10 | M12 | M14 | M22 | DIN Schl\u00fcsselweite | 17 mm | 19 mm | 22 mm | 32 mm | ISO Schl\u00fcsselweite | 16 mm | 18 mm | 21 mm | 34 mm | Finden Sie die passenden Sechskantschrauben nach Gewindeform oder Anwendungsbereich DIN 933 / ISO 4017\n\nSource: <https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php>\n", "dimension": "Schl\u00fcsselweite", "din_standard": "DIN 933", "din_value": "17 mm", "file": "m10-din-933.md", "generated": true, "harvested": "2026-08-05", "id": "m10-din-933", "interchangeability": "andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen", "iso_standard": "ISO 4017", "iso_value": "16 mm", "part_description": "Sechskantschrauben mit Vollgewinde", "size": "M10", "source_quote": "andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen. Eine \u00dcbersicht der \u00c4nderung k\u00f6nnen Sie der Tabelle entnehmen. Nenndurchmesser | M10 | M12 | M14 | M22 | DIN Schl\u00fcsselweite | 17 mm | 19 mm | 22 mm | 32 mm | ISO Schl\u00fcsselweite | 16 mm | 18 mm | 21 mm | 34 mm | Finden Sie die passenden Sechskantschrauben nach Gewindeform oder Anwendungsbereich DIN 933 / ISO 4017", "sources": ["https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php"], "stale_after": "2029-08-04", "title": "DIN 933 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "unverified_fields": "part_description", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 933\n\n**ISO standard:** ISO 4017\n\n**Part:** Sechskantschrauben mit Vollgewinde\n\n**Size:** M12\n\n**Dimension that differs:** Schl\u00fcsselweite\n\n**DIN value:** 19 mm\n\n**ISO value:** 18 mm\n\n**Interchangeability verdict:** andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen\n\n> andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen. Eine \u00dcbersicht der \u00c4nderung k\u00f6nnen Sie der Tabelle entnehmen. Nenndurchmesser | M10 | M12 | M14 | M22 | DIN Schl\u00fcsselweite | 17 mm | 19 mm | 22 mm | 32 mm | ISO Schl\u00fcsselweite | 16 mm | 18 mm | 21 mm | 34 mm | Finden Sie die passenden Sechskantschrauben nach Gewindeform oder Anwendungsbereich DIN 933 / ISO 4017\n\nSource: <https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php>\n", "dimension": "Schl\u00fcsselweite", "din_standard": "DIN 933", "din_value": "19 mm", "file": "m12-din-933.md", "generated": true, "harvested": "2026-08-05", "id": "m12-din-933", "interchangeability": "andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen", "iso_standard": "ISO 4017", "iso_value": "18 mm", "part_description": "Sechskantschrauben mit Vollgewinde", "size": "M12", "source_quote": "andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen. Eine \u00dcbersicht der \u00c4nderung k\u00f6nnen Sie der Tabelle entnehmen. Nenndurchmesser | M10 | M12 | M14 | M22 | DIN Schl\u00fcsselweite | 17 mm | 19 mm | 22 mm | 32 mm | ISO Schl\u00fcsselweite | 16 mm | 18 mm | 21 mm | 34 mm | Finden Sie die passenden Sechskantschrauben nach Gewindeform oder Anwendungsbereich DIN 933 / ISO 4017", "sources": ["https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php"], "stale_after": "2029-08-04", "title": "DIN 933 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "unverified_fields": "part_description", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 933\n\n**ISO standard:** ISO 4017\n\n**Part:** Sechskantschrauben mit Vollgewinde\n\n**Size:** M14\n\n**Dimension that differs:** Schl\u00fcsselweite\n\n**DIN value:** 22 mm\n\n**ISO value:** 21 mm\n\n**Interchangeability verdict:** andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen\n\n> andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen. Eine \u00dcbersicht der \u00c4nderung k\u00f6nnen Sie der Tabelle entnehmen. Nenndurchmesser | M10 | M12 | M14 | M22 | DIN Schl\u00fcsselweite | 17 mm | 19 mm | 22 mm | 32 mm | ISO Schl\u00fcsselweite | 16 mm | 18 mm | 21 mm | 34 mm | Finden Sie die passenden Sechskantschrauben nach Gewindeform oder Anwendungsbereich DIN 933 / ISO 4017\n\nSource: <https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php>\n", "dimension": "Schl\u00fcsselweite", "din_standard": "DIN 933", "din_value": "22 mm", "file": "m14-din-933.md", "generated": true, "harvested": "2026-08-05", "id": "m14-din-933", "interchangeability": "andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen", "iso_standard": "ISO 4017", "iso_value": "21 mm", "part_description": "Sechskantschrauben mit Vollgewinde", "size": "M14", "source_quote": "andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen. Eine \u00dcbersicht der \u00c4nderung k\u00f6nnen Sie der Tabelle entnehmen. Nenndurchmesser | M10 | M12 | M14 | M22 | DIN Schl\u00fcsselweite | 17 mm | 19 mm | 22 mm | 32 mm | ISO Schl\u00fcsselweite | 16 mm | 18 mm | 21 mm | 34 mm | Finden Sie die passenden Sechskantschrauben nach Gewindeform oder Anwendungsbereich DIN 933 / ISO 4017", "sources": ["https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php"], "stale_after": "2029-08-04", "title": "DIN 933 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "unverified_fields": "part_description", "verified": true}
{"asset": "fastener-standard-interchangeability-exceptions", "body": "**DIN standard:** DIN 933\n\n**ISO standard:** ISO 4017\n\n**Part:** Sechskantschrauben mit Vollgewinde\n\n**Size:** M22\n\n**Dimension that differs:** Schl\u00fcsselweite\n\n**DIN value:** 32 mm\n\n**ISO value:** 34 mm\n\n**Interchangeability verdict:** andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen\n\n> andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen. Eine \u00dcbersicht der \u00c4nderung k\u00f6nnen Sie der Tabelle entnehmen. Nenndurchmesser | M10 | M12 | M14 | M22 | DIN Schl\u00fcsselweite | 17 mm | 19 mm | 22 mm | 32 mm | ISO Schl\u00fcsselweite | 16 mm | 18 mm | 21 mm | 34 mm | Finden Sie die passenden Sechskantschrauben nach Gewindeform oder Anwendungsbereich DIN 933 / ISO 4017\n\nSource: <https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php>\n", "dimension": "Schl\u00fcsselweite", "din_standard": "DIN 933", "din_value": "32 mm", "file": "m22-din-933.md", "generated": true, "harvested": "2026-08-05", "id": "m22-din-933", "interchangeability": "andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen", "iso_standard": "ISO 4017", "iso_value": "34 mm", "part_description": "Sechskantschrauben mit Vollgewinde", "size": "M22", "source_quote": "andere Verschraubungswerkzeuge eingesetzt werden m\u00fcssen. Eine \u00dcbersicht der \u00c4nderung k\u00f6nnen Sie der Tabelle entnehmen. Nenndurchmesser | M10 | M12 | M14 | M22 | DIN Schl\u00fcsselweite | 17 mm | 19 mm | 22 mm | 32 mm | ISO Schl\u00fcsselweite | 16 mm | 18 mm | 21 mm | 34 mm | Finden Sie die passenden Sechskantschrauben nach Gewindeform oder Anwendungsbereich DIN 933 / ISO 4017", "sources": ["https://www.wuerth.de/web/de/awkg/kompetenz/din_iso_normteile/din-933-931-iso-4014-4017-sechskantschrauben.php"], "stale_after": "2029-08-04", "title": "DIN 933 \u2014 DIN / ISO / BS fastener equivalents and the sizes where they are not interchangeable", "type": "equivalence", "unverified_fields": "part_description", "verified": true}